70717988 has 24 divisors (see below), whose sum is σ = 136914624. Its totient is φ = 31690400.

The previous prime is 70717973. The next prime is 70718017. The reversal of 70717988 is 88971707.

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, 8195 + ... + 14442.

It is an arithmetic number, because the mean of its divisors is an integer number (5704776).

Almost surely, 2^70717988 is an apocalyptic number.

It is an amenable number.

70717988 is a deficient number, since it is larger than the sum of its proper divisors (66196636).

70717988 is a wasteful number, since it uses less digits than its factorization.

70717988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22723 (or 22721 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 47.

The square root of 70717988 is about 8409.3987894498. The cubic root of 70717988 is about 413.5328031908.

The spelling of 70717988 in words is "seventy million, seven hundred seventeen thousand, nine hundred eighty-eight".