70656 has 44 divisors (see below), whose sum is σ = 196512. Its totient is φ = 22528.

The previous prime is 70639. The next prime is 70657. The reversal of 70656 is 65607.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3061 + ... + 3083.

2⁷⁰⁶⁵⁶ 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 70656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98256).

70656 is an abundant number, since it is smaller than the sum of its proper divisors (125856).

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

70656 is a wasteful number, since it uses less digits than its factorization.

70656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 70656 is about 265.8119636134. The cubic root of 70656 is about 41.3411940189.

Subtracting from 70656 its product of nonzero digits (1260), we obtain a palindrome (69396).

The spelling of 70656 in words is "seventy thousand, six hundred fifty-six".