70879873 has 2 divisors, whose sum is σ = 70879874. Its totient is φ = 70879872.

The previous prime is 70879849. The next prime is 70879877. The reversal of 70879873 is 37897807.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52664049 + 18215824 = 7257^2 + 4268^2 .

It is an emirp because it is prime and its reverse (37897807) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70879873 is a prime.

It is a super-2 number, since 2×70879873² = 10047912792992258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70879877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35439936 + 35439937.

It is an arithmetic number, because the mean of its divisors is an integer number (35439937).

Almost surely, 2^70879873 is an apocalyptic number.

It is an amenable number.

70879873 is a deficient number, since it is larger than the sum of its proper divisors (1).

70879873 is an equidigital number, since it uses as much as digits as its factorization.

70879873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 70879873 is about 8419.0185294962. The cubic root of 70879873 is about 413.8481107107.

The spelling of 70879873 in words is "seventy million, eight hundred seventy-nine thousand, eight hundred seventy-three".