70448779 has 2 divisors, whose sum is σ = 70448780. Its totient is φ = 70448778.

The previous prime is 70448767. The next prime is 70448821. The reversal of 70448779 is 97784407.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70448779 - 2²¹ = 68351627 is a prime.

It is not a weakly prime, because it can be changed into another prime (70448179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35224389 + 35224390.

It is an arithmetic number, because the mean of its divisors is an integer number (35224390).

Almost surely, 2^70448779 is an apocalyptic number.

70448779 is a deficient number, since it is larger than the sum of its proper divisors (1).

70448779 is an equidigital number, since it uses as much as digits as its factorization.

70448779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 70448779 is about 8393.3770914930. The cubic root of 70448779 is about 413.0073908161.

The spelling of 70448779 in words is "seventy million, four hundred forty-eight thousand, seven hundred seventy-nine".