Search a number
-
+
70754071 = 107661253
BaseRepresentation
bin1000011011110…
…01111100010111
311221010200100011
410031321330113
5121103112241
611004301051
71516254043
oct415717427
9157120304
1070754071
1136a36643
121b841787
1311873b1b
14957b023
156329281
hex4379f17

70754071 has 4 divisors (see below), whose sum is σ = 71415432. Its totient is φ = 70092712.

The previous prime is 70754063. The next prime is 70754087. The reversal of 70754071 is 17045707.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70754071 - 23 = 70754063 is a prime.

It is a super-2 number, since 2×707540712 = 10012277126146082, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70754041) 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, 330520 + ... + 330733.

It is an arithmetic number, because the mean of its divisors is an integer number (17853858).

Almost surely, 270754071 is an apocalyptic number.

70754071 is a deficient number, since it is larger than the sum of its proper divisors (661361).

70754071 is a wasteful number, since it uses less digits than its factorization.

70754071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661360.

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 70754071 is about 8411.5439129805. The cubic root of 70754071 is about 413.6031246062.

Adding to 70754071 its reverse (17045707), we get a palindrome (87799778).

The spelling of 70754071 in words is "seventy million, seven hundred fifty-four thousand, seventy-one".

Divisors: 1 107 661253 70754071