70679905 has 16 divisors (see below), whose sum is σ = 89599680. Its totient is φ = 53376192.

The previous prime is 70679893. The next prime is 70679909. The reversal of 70679905 is 50997607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70679905 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70679909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28942 + ... + 31288.

It is an arithmetic number, because the mean of its divisors is an integer number (5599980).

Almost surely, 2^70679905 is an apocalyptic number.

It is an amenable number.

70679905 is a deficient number, since it is larger than the sum of its proper divisors (18919775).

70679905 is a wasteful number, since it uses less digits than its factorization.

70679905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 70679905 is about 8407.1341728320. The cubic root of 70679905 is about 413.4585580659.

The spelling of 70679905 in words is "seventy million, six hundred seventy-nine thousand, nine hundred five".