70870879 has 2 divisors, whose sum is σ = 70870880. Its totient is φ = 70870878.

The previous prime is 70870871. The next prime is 70870903. The reversal of 70870879 is 97807807.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70870879 - 2³ = 70870871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70870871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35435439 + 35435440.

It is an arithmetic number, because the mean of its divisors is an integer number (35435440).

Almost surely, 2^70870879 is an apocalyptic number.

70870879 is a deficient number, since it is larger than the sum of its proper divisors (1).

70870879 is an equidigital number, since it uses as much as digits as its factorization.

70870879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 46.

The square root of 70870879 is about 8418.4843647773. The cubic root of 70870879 is about 413.8306054717.

The spelling of 70870879 in words is "seventy million, eight hundred seventy thousand, eight hundred seventy-nine".