70809256 has 16 divisors (see below), whose sum is σ = 151734240. Its totient is φ = 30346800.

The previous prime is 70809251. The next prime is 70809259. The reversal of 70809256 is 65290807.

It is not an unprimeable number, because it can be changed into a prime (70809251) 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, 632170 + ... + 632281.

It is an arithmetic number, because the mean of its divisors is an integer number (9483390).

Almost surely, 2^70809256 is an apocalyptic number.

It is an amenable number.

70809256 is an abundant number, since it is smaller than the sum of its proper divisors (80924984).

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

70809256 is a wasteful number, since it uses less digits than its factorization.

70809256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264464 (or 1264460 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 70809256 is about 8414.8235869803. The cubic root of 70809256 is about 413.7106272869.

The spelling of 70809256 in words is "seventy million, eight hundred nine thousand, two hundred fifty-six".