79631573 has 4 divisors (see below), whose sum is σ = 91007520. Its totient is φ = 68255628.

The previous prime is 79631567. The next prime is 79631579. The reversal of 79631573 is 37513697.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37513697 = 13 ⋅2885669.

It is an interprime number because it is at equal distance from previous prime (79631567) and next prime (79631579).

It is not a de Polignac number, because 79631573 - 2⁶ = 79631509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79631573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79631579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5687963 + ... + 5687976.

It is an arithmetic number, because the mean of its divisors is an integer number (22751880).

Almost surely, 2^79631573 is an apocalyptic number.

It is an amenable number.

79631573 is a deficient number, since it is larger than the sum of its proper divisors (11375947).

79631573 is a wasteful number, since it uses less digits than its factorization.

79631573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11375946.

The product of its digits is 119070, while the sum is 41.

The square root of 79631573 is about 8923.6524472886. The cubic root of 79631573 is about 430.2244600604.

The spelling of 79631573 in words is "seventy-nine million, six hundred thirty-one thousand, five hundred seventy-three".