70697979 has 24 divisors (see below), whose sum is σ = 112300032. Its totient is φ = 42502320.

The previous prime is 70697971. The next prime is 70697983. The reversal of 70697979 is 97979607.

It is not a de Polignac number, because 70697979 - 2³ = 70697971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70697971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9762 + ... + 15384.

It is an arithmetic number, because the mean of its divisors is an integer number (4679168).

Almost surely, 2^70697979 is an apocalyptic number.

70697979 is a deficient number, since it is larger than the sum of its proper divisors (41602053).

70697979 is a wasteful number, since it uses less digits than its factorization.

70697979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5767 (or 5764 counting only the distinct ones).

The product of its (nonzero) digits is 1500282, while the sum is 54.

The square root of 70697979 is about 8408.2090245188. The cubic root of 70697979 is about 413.4937977525.

The spelling of 70697979 in words is "seventy million, six hundred ninety-seven thousand, nine hundred seventy-nine".