70521384 has 16 divisors (see below), whose sum is σ = 176303520. Its totient is φ = 23507120.

The previous prime is 70521377. The next prime is 70521391. The reversal of 70521384 is 48312507.

It is an interprime number because it is at equal distance from previous prime (70521377) and next prime (70521391).

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, 1469172 + ... + 1469219.

It is an arithmetic number, because the mean of its divisors is an integer number (11018970).

Almost surely, 2^70521384 is an apocalyptic number.

It is an amenable number.

70521384 is an abundant number, since it is smaller than the sum of its proper divisors (105782136).

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

70521384 is a wasteful number, since it uses less digits than its factorization.

70521384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938400 (or 2938396 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 70521384 is about 8397.7011139954. The cubic root of 70521384 is about 413.1492248622.

The spelling of 70521384 in words is "seventy million, five hundred twenty-one thousand, three hundred eighty-four".