12697560 has 80 divisors (see below), whose sum is σ = 42688800. Its totient is φ = 3385152.

The previous prime is 12697543. The next prime is 12697579. The reversal of 12697560 is 6579621.

12697560 is a `hidden beast` number, since 1 + 2 + 6 + 97 + 560 = 666.

It is a super-2 number, since 2×12697560² = 322456059907200, 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 an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1281 + ... + 5199.

It is an arithmetic number, because the mean of its divisors is an integer number (533610).

Almost surely, 2^12697560 is an apocalyptic number.

12697560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12697560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21344400).

12697560 is an abundant number, since it is smaller than the sum of its proper divisors (29991240).

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

12697560 is a wasteful number, since it uses less digits than its factorization.

12697560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942 (or 3929 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 12697560 is about 3563.3635795411. The cubic root of 12697560 is about 233.2957127556.

The spelling of 12697560 in words is "twelve million, six hundred ninety-seven thousand, five hundred sixty".