70056520 has 16 divisors (see below), whose sum is σ = 157627260. Its totient is φ = 28022592.

The previous prime is 70056451. The next prime is 70056521. The reversal of 70056520 is 2565007.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69989956 + 66564 = 8366^2 + 258^2 .

It is not an unprimeable number, because it can be changed into a prime (70056521) 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, 875667 + ... + 875746.

Almost surely, 2^70056520 is an apocalyptic number.

It is an amenable number.

70056520 is an abundant number, since it is smaller than the sum of its proper divisors (87570740).

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

70056520 is a wasteful number, since it uses less digits than its factorization.

70056520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751424 (or 1751420 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 70056520 is about 8369.9772998497. The cubic root of 70056520 is about 412.2394215906.

The spelling of 70056520 in words is "seventy million, fifty-six thousand, five hundred twenty".