70446645 has 32 divisors (see below), whose sum is σ = 125664000. Its totient is φ = 37444032.

The previous prime is 70446637. The next prime is 70446743. The reversal of 70446645 is 54664407.

70446645 is a `hidden beast` number, since 7 + 0 + 4 + 4 + 6 + 645 = 666.

It is not a de Polignac number, because 70446645 - 2³ = 70446637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49656 + ... + 51054.

It is an arithmetic number, because the mean of its divisors is an integer number (3927000).

Almost surely, 2^70446645 is an apocalyptic number.

70446645 is the 4197-th decagonal number.

It is an amenable number.

70446645 is a deficient number, since it is larger than the sum of its proper divisors (55217355).

70446645 is a wasteful number, since it uses less digits than its factorization.

70446645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786 (or 1780 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 70446645 is about 8393.2499664909. The cubic root of 70446645 is about 413.0032205679.

It can be divided in two parts, 7044 and 6645, that added together give a square (13689 = 117²).

The spelling of 70446645 in words is "seventy million, four hundred forty-six thousand, six hundred forty-five".