79631604 has 72 divisors (see below), whose sum is σ = 229549320. Its totient is φ = 23058432.

The previous prime is 79631597. The next prime is 79631609. The reversal of 79631604 is 40613697.

It can be written as a sum of positive squares in 4 ways, for example, as 33663204 + 45968400 = 5802^2 + 6780^2 .

It is a super-2 number, since 2×79631604² = 12682384711225632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79631609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2952 + ... + 12960.

It is an arithmetic number, because the mean of its divisors is an integer number (3188185).

Almost surely, 2^79631604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79631604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114774660).

79631604 is an abundant number, since it is smaller than the sum of its proper divisors (149917716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79631604 is a wasteful number, since it uses less digits than its factorization.

79631604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10049 (or 10044 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 79631604 is about 8923.6541842454. The cubic root of 79631604 is about 430.2245158882.

It can be divided in two parts, 796 and 31604, that added together give a square (32400 = 180²).

The spelling of 79631604 in words is "seventy-nine million, six hundred thirty-one thousand, six hundred four".