70620645 has 32 divisors (see below), whose sum is σ = 115945344. Its totient is φ = 36691200.

The previous prime is 70620637. The next prime is 70620653. The reversal of 70620645 is 54602607.

It is an interprime number because it is at equal distance from previous prime (70620637) and next prime (70620653).

It is not a de Polignac number, because 70620645 - 2³ = 70620637 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, 167535 + ... + 167955.

It is an arithmetic number, because the mean of its divisors is an integer number (3623292).

Almost surely, 2^70620645 is an apocalyptic number.

It is an amenable number.

70620645 is a deficient number, since it is larger than the sum of its proper divisors (45324699).

70620645 is a wasteful number, since it uses less digits than its factorization.

70620645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 70620645 is about 8403.6090461182. The cubic root of 70620645 is about 413.3429740352.

The spelling of 70620645 in words is "seventy million, six hundred twenty thousand, six hundred forty-five".