70020556 has 18 divisors (see below), whose sum is σ = 128099132. Its totient is φ = 33487080.

The previous prime is 70020523. The next prime is 70020581. The reversal of 70020556 is 65502007.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 70020556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14430 + ... + 18661.

Almost surely, 2^70020556 is an apocalyptic number.

It is an amenable number.

70020556 is a deficient number, since it is larger than the sum of its proper divisors (58078576).

70020556 is a wasteful number, since it uses less digits than its factorization.

70020556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33141 (or 33116 counting only the distinct ones).

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

The square root of 70020556 is about 8367.8286311325. The cubic root of 70020556 is about 412.1688675282.

The spelling of 70020556 in words is "seventy million, twenty thousand, five hundred fifty-six".