70531620 has 48 divisors (see below), whose sum is σ = 202832448. Its totient is φ = 18299520.

The previous prime is 70531607. The next prime is 70531627. The reversal of 70531620 is 2613507.

It is not an unprimeable number, because it can be changed into a prime (70531627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13666 + ... + 18105.

It is an arithmetic number, because the mean of its divisors is an integer number (4225676).

Almost surely, 2^70531620 is an apocalyptic number.

It is an amenable number.

70531620 is an abundant number, since it is smaller than the sum of its proper divisors (132300828).

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

70531620 is a wasteful number, since it uses less digits than its factorization.

70531620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31820 (or 31818 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 70531620 is about 8398.3105443893. The cubic root of 70531620 is about 413.1692130825.

The spelling of 70531620 in words is "seventy million, five hundred thirty-one thousand, six hundred twenty".