70721712 has 60 divisors (see below), whose sum is σ = 198488784. Its totient is φ = 23506560.

The previous prime is 70721687. The next prime is 70721719. The reversal of 70721712 is 21712707.

It is not an unprimeable number, because it can be changed into a prime (70721719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94813 + ... + 95555.

Almost surely, 2^70721712 is an apocalyptic number.

70721712 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

70721712 is an abundant number, since it is smaller than the sum of its proper divisors (127767072).

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

70721712 is a wasteful number, since it uses less digits than its factorization.

70721712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418 (or 1409 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 27.

The square root of 70721712 is about 8409.6202054552. The cubic root of 70721712 is about 413.5400619245.

The spelling of 70721712 in words is "seventy million, seven hundred twenty-one thousand, seven hundred twelve".