70808879 has 2 divisors, whose sum is σ = 70808880. Its totient is φ = 70808878.

The previous prime is 70808869. The next prime is 70808887. The reversal of 70808879 is 97880807.

It is a strong prime.

It is an emirp because it is prime and its reverse (97880807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70808879 - 2²⁰ = 69760303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70808809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35404439 + 35404440.

It is an arithmetic number, because the mean of its divisors is an integer number (35404440).

Almost surely, 2^70808879 is an apocalyptic number.

70808879 is a deficient number, since it is larger than the sum of its proper divisors (1).

70808879 is an equidigital number, since it uses as much as digits as its factorization.

70808879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 47.

The square root of 70808879 is about 8414.8011860055. The cubic root of 70808879 is about 413.7098930647.

The spelling of 70808879 in words is "seventy million, eight hundred eight thousand, eight hundred seventy-nine".