79808265 has 48 divisors (see below), whose sum is σ = 146577600. Its totient is φ = 40058496.

The previous prime is 79808257. The next prime is 79808269. The reversal of 79808265 is 56280897.

79808265 = 296² + 297² + ... + 642².

It is not a de Polignac number, because 79808265 - 2³ = 79808257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 79808265.

It is not an unprimeable number, because it can be changed into a prime (79808269) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 229822 + ... + 230168.

It is an arithmetic number, because the mean of its divisors is an integer number (3053700).

Almost surely, 2^79808265 is an apocalyptic number.

It is an amenable number.

79808265 is a deficient number, since it is larger than the sum of its proper divisors (66769335).

79808265 is a wasteful number, since it uses less digits than its factorization.

79808265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 79808265 is about 8933.5471678388. The cubic root of 79808265 is about 430.5424288533.

The spelling of 79808265 in words is "seventy-nine million, eight hundred eight thousand, two hundred sixty-five".