79905670 has 16 divisors (see below), whose sum is σ = 154894320. Its totient is φ = 29503584.

The previous prime is 79905629. The next prime is 79905689. The reversal of 79905670 is 7650997.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307200 + ... + 307459.

It is an arithmetic number, because the mean of its divisors is an integer number (9680895).

Almost surely, 2^79905670 is an apocalyptic number.

79905670 is a deficient number, since it is larger than the sum of its proper divisors (74988650).

79905670 is a wasteful number, since it uses less digits than its factorization.

79905670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614679.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 79905670 is about 8938.9971473315. The cubic root of 79905670 is about 430.7175148783.

The spelling of 79905670 in words is "seventy-nine million, nine hundred five thousand, six hundred seventy".