Search a number
-
+
70581107 = 531331719
BaseRepresentation
bin1000011010011…
…11101101110011
311220210220002002
410031033231303
5121032043412
611000444215
71514633552
oct415175563
9156726062
1070581107
11369286a3
121b77966b
131181318c
149533d99
1562e2dc2
hex434fb73

70581107 has 4 divisors (see below), whose sum is σ = 71912880. Its totient is φ = 69249336.

The previous prime is 70581101. The next prime is 70581113. The reversal of 70581107 is 70118507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70118507 = 643109049.

It is an interprime number because it is at equal distance from previous prime (70581101) and next prime (70581113).

It is a cyclic number.

It is not a de Polignac number, because 70581107 - 212 = 70577011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70581107.

It is not an unprimeable number, because it can be changed into a prime (70581101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665807 + ... + 665912.

It is an arithmetic number, because the mean of its divisors is an integer number (17978220).

Almost surely, 270581107 is an apocalyptic number.

70581107 is a deficient number, since it is larger than the sum of its proper divisors (1331773).

70581107 is a wasteful number, since it uses less digits than its factorization.

70581107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331772.

The product of its (nonzero) digits is 1960, while the sum is 29.

The square root of 70581107 is about 8401.2562751055. The cubic root of 70581107 is about 413.2658209337.

It can be divided in two parts, 7058110 and 7, that multiplied together give a triangular number (49406770 = T9940).

The spelling of 70581107 in words is "seventy million, five hundred eighty-one thousand, one hundred seven".

Divisors: 1 53 1331719 70581107