70405256 has 8 divisors (see below), whose sum is σ = 132009870. Its totient is φ = 35202624.

The previous prime is 70405229. The next prime is 70405261. The reversal of 70405256 is 65250407.

It can be written as a sum of positive squares in only one way, i.e., 64480900 + 5924356 = 8030^2 + 2434^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4400321 + ... + 4400336.

Almost surely, 2^70405256 is an apocalyptic number.

It is an amenable number.

70405256 is a deficient number, since it is larger than the sum of its proper divisors (61604614).

70405256 is a wasteful number, since it uses less digits than its factorization.

70405256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8800663 (or 8800659 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 70405256 is about 8390.7839919760. The cubic root of 70405256 is about 412.9223218062.

The spelling of 70405256 in words is "seventy million, four hundred five thousand, two hundred fifty-six".