70507979 has 2 divisors, whose sum is σ = 70507980. Its totient is φ = 70507978.

The previous prime is 70507951. The next prime is 70508017. The reversal of 70507979 is 97970507.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70507979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70507909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35253989 + 35253990.

It is an arithmetic number, because the mean of its divisors is an integer number (35253990).

Almost surely, 2^70507979 is an apocalyptic number.

70507979 is a deficient number, since it is larger than the sum of its proper divisors (1).

70507979 is an equidigital number, since it uses as much as digits as its factorization.

70507979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138915, while the sum is 44.

The square root of 70507979 is about 8396.9029409658. The cubic root of 70507979 is about 413.1230454917.

The spelling of 70507979 in words is "seventy million, five hundred seven thousand, nine hundred seventy-nine".