79140560 has 40 divisors (see below), whose sum is σ = 185203176. Its totient is φ = 31449600.

The previous prime is 79140557. The next prime is 79140563. The reversal of 79140560 is 6504197.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79140557) and next prime (79140563).

It can be written as a sum of positive squares in 4 ways, for example, as 5798464 + 73342096 = 2408^2 + 8564^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×79140560² = 12526456474227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79140563) 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, 9410 + ... + 15710.

Almost surely, 2^79140560 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 79140560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92601588).

79140560 is an abundant number, since it is smaller than the sum of its proper divisors (106062616).

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

79140560 is a wasteful number, since it uses less digits than its factorization.

79140560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6471 (or 6465 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 79140560 is about 8896.0980210427. The cubic root of 79140560 is about 429.3383731603.

The spelling of 79140560 in words is "seventy-nine million, one hundred forty thousand, five hundred sixty".