70456979 has 4 divisors (see below), whose sum is σ = 72886560. Its totient is φ = 68027400.

The previous prime is 70456963. The next prime is 70456987. The reversal of 70456979 is 97965407.

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 70456979 - 2⁴ = 70456963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70456879) 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, 1214747 + ... + 1214804.

It is an arithmetic number, because the mean of its divisors is an integer number (18221640).

Almost surely, 2^70456979 is an apocalyptic number.

70456979 is a deficient number, since it is larger than the sum of its proper divisors (2429581).

70456979 is a wasteful number, since it uses less digits than its factorization.

70456979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429580.

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 70456979 is about 8393.8655576558. The cubic root of 70456979 is about 413.0234144163.

The spelling of 70456979 in words is "seventy million, four hundred fifty-six thousand, nine hundred seventy-nine".