12565797 has 16 divisors (see below), whose sum is σ = 17573760. Its totient is φ = 7971392.

The previous prime is 12565789. The next prime is 12565799. The reversal of 12565797 is 79756521.

It is a cyclic number.

It is not a de Polignac number, because 12565797 - 2³ = 12565789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12565799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18223 + ... + 18899.

It is an arithmetic number, because the mean of its divisors is an integer number (1098360).

Almost surely, 2^12565797 is an apocalyptic number.

It is an amenable number.

12565797 is a deficient number, since it is larger than the sum of its proper divisors (5007963).

12565797 is a wasteful number, since it uses less digits than its factorization.

12565797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972.

The product of its digits is 132300, while the sum is 42.

The square root of 12565797 is about 3544.8267940761. The cubic root of 12565797 is about 232.4859327828.

The spelling of 12565797 in words is "twelve million, five hundred sixty-five thousand, seven hundred ninety-seven".