79820770 has 16 divisors (see below), whose sum is σ = 144811008. Its totient is φ = 31676400.

The previous prime is 79820743. The next prime is 79820773. The reversal of 79820770 is 7702897.

It is not an unprimeable number, because it can be changed into a prime (79820773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30156 + ... + 32695.

It is an arithmetic number, because the mean of its divisors is an integer number (9050688).

Almost surely, 2^79820770 is an apocalyptic number.

79820770 is a deficient number, since it is larger than the sum of its proper divisors (64990238).

79820770 is a wasteful number, since it uses less digits than its factorization.

79820770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62985.

The product of its (nonzero) digits is 49392, while the sum is 40.

The square root of 79820770 is about 8934.2470303882. The cubic root of 79820770 is about 430.5649146276.

The spelling of 79820770 in words is "seventy-nine million, eight hundred twenty thousand, seven hundred seventy".