Search a number
-
+
70999907 = 117981703
BaseRepresentation
bin1000011101101…
…01111101100011
311221121011120012
410032311331203
5121133444112
611013435135
71521326546
oct416657543
9157534505
1070999907
1137094310
121b93baab
131192b9a4
14960285d
156377022
hex43b5f63

70999907 has 8 divisors (see below), whose sum is σ = 78435840. Its totient is φ = 63727560.

The previous prime is 70999897. The next prime is 70999927.

70999907 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70999907 - 26 = 70999843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70999927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39983 + ... + 41720.

It is an arithmetic number, because the mean of its divisors is an integer number (9804480).

Almost surely, 270999907 is an apocalyptic number.

70999907 is a deficient number, since it is larger than the sum of its proper divisors (7435933).

70999907 is a wasteful number, since it uses less digits than its factorization.

70999907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81793.

The product of its (nonzero) digits is 321489, while the sum is 50.

The square root of 70999907 is about 8426.1442546398. The cubic root of 70999907 is about 414.0815941459.

The spelling of 70999907 in words is "seventy million, nine hundred ninety-nine thousand, nine hundred seven".

Divisors: 1 11 79 869 81703 898733 6454537 70999907