70724624 has 20 divisors (see below), whose sum is σ = 145090044. Its totient is φ = 33282048.

The previous prime is 70724617. The next prime is 70724653. The reversal of 70724624 is 42642707.

It can be written as a sum of positive squares in 2 ways, for example, as 36385024 + 34339600 = 6032^2 + 5860^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129737 + ... + 130280.

Almost surely, 2^70724624 is an apocalyptic number.

It is an amenable number.

70724624 is an abundant number, since it is smaller than the sum of its proper divisors (74365420).

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

70724624 is a wasteful number, since it uses less digits than its factorization.

70724624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260042 (or 260036 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 70724624 is about 8409.7933387212. The cubic root of 70724624 is about 413.5457377493.

The spelling of 70724624 in words is "seventy million, seven hundred twenty-four thousand, six hundred twenty-four".