70156656 has 60 divisors (see below), whose sum is σ = 197357160. Its totient is φ = 23264640.

The previous prime is 70156613. The next prime is 70156679. The reversal of 70156656 is 65665107.

It is a happy number.

It is a super-2 number, since 2×70156656² = 9843912762204672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 70156656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29230 + ... + 31538.

It is an arithmetic number, because the mean of its divisors is an integer number (3289286).

Almost surely, 2^70156656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70156656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98678580).

70156656 is an abundant number, since it is smaller than the sum of its proper divisors (127200504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70156656 is a wasteful number, since it uses less digits than its factorization.

70156656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534 (or 2525 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 70156656 is about 8375.9570199470. The cubic root of 70156656 is about 412.4357409545.

The spelling of 70156656 in words is "seventy million, one hundred fifty-six thousand, six hundred fifty-six".