70624920 has 64 divisors (see below), whose sum is σ = 216817920. Its totient is φ = 18393984.

The previous prime is 70624903. The next prime is 70624943. The reversal of 70624920 is 2942607.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1684 + ... + 12003.

It is an arithmetic number, because the mean of its divisors is an integer number (3387780).

Almost surely, 2^70624920 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 70624920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108408960).

70624920 is an abundant number, since it is smaller than the sum of its proper divisors (146193000).

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

70624920 is a wasteful number, since it uses less digits than its factorization.

70624920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13744 (or 13740 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 70624920 is about 8403.8633972715. The cubic root of 70624920 is about 413.3513143987.

The spelling of 70624920 in words is "seventy million, six hundred twenty-four thousand, nine hundred twenty".