70721364 has 24 divisors (see below), whose sum is σ = 188590528. Its totient is φ = 20206080.

The previous prime is 70721359. The next prime is 70721407. The reversal of 70721364 is 46312707.

It is a super-2 number, since 2×70721364² = 10003022652040992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420877 + ... + 421044.

Almost surely, 2^70721364 is an apocalyptic number.

It is an amenable number.

70721364 is an abundant number, since it is smaller than the sum of its proper divisors (117869164).

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

70721364 is a wasteful number, since it uses less digits than its factorization.

70721364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841935 (or 841933 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 70721364 is about 8409.5995148402. The cubic root of 70721364 is about 413.5393836219.

The spelling of 70721364 in words is "seventy million, seven hundred twenty-one thousand, three hundred sixty-four".