79591645 has 16 divisors (see below), whose sum is σ = 110786688. Its totient is φ = 53760960.

The previous prime is 79591643. The next prime is 79591669. The reversal of 79591645 is 54619597.

It is not a de Polignac number, because 79591645 - 2¹ = 79591643 is a prime.

It is a Duffinian number.

79591645 is a Rhonda number in base 10.

Its product of digits (340200) is a multiple of the sum of its prime divisors (34020).

It is a junction number, because it is equal to n+sod(n) for n = 79591595 and 79591604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79591643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14626 + ... + 19315.

It is an arithmetic number, because the mean of its divisors is an integer number (6924168).

Almost surely, 2^79591645 is an apocalyptic number.

It is an amenable number.

79591645 is a deficient number, since it is larger than the sum of its proper divisors (31195043).

79591645 is a wasteful number, since it uses less digits than its factorization.

79591645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34020.

The product of its digits is 340200, while the sum is 46.

The square root of 79591645 is about 8921.4149662483. The cubic root of 79591645 is about 430.1525418774.

It can be divided in two parts, 7959 and 1645, that added together give a square (9604 = 98²).

The spelling of 79591645 in words is "seventy-nine million, five hundred ninety-one thousand, six hundred forty-five".