70645624 has 64 divisors (see below), whose sum is σ = 160574400. Its totient is φ = 28492800.

The previous prime is 70645613. The next prime is 70645643. The reversal of 70645624 is 42654607.

It is a self number, because there is not a number n which added to its sum of digits gives 70645624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66054 + ... + 67114.

It is an arithmetic number, because the mean of its divisors is an integer number (2508975).

Almost surely, 2^70645624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70645624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80287200).

70645624 is an abundant number, since it is smaller than the sum of its proper divisors (89928776).

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

70645624 is a wasteful number, since it uses less digits than its factorization.

70645624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 70645624 is about 8405.0951214130. The cubic root of 70645624 is about 413.3917023594.

The spelling of 70645624 in words is "seventy million, six hundred forty-five thousand, six hundred twenty-four".