137965569 has 16 divisors (see below), whose sum is σ = 219374592. Its totient is φ = 75409488.

The previous prime is 137965559. The next prime is 137965571. The reversal of 137965569 is 965569731.

It is not a de Polignac number, because 137965569 - 2⁸ = 137965313 is a prime.

It is a super-2 number, since 2×137965569² = 38068996458987522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (137965559) 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, 142339 + ... + 143304.

It is an arithmetic number, because the mean of its divisors is an integer number (13710912).

Almost surely, 2^137965569 is an apocalyptic number.

It is an amenable number.

137965569 is a deficient number, since it is larger than the sum of its proper divisors (81409023).

137965569 is a wasteful number, since it uses less digits than its factorization.

137965569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285676.

The product of its digits is 1530900, while the sum is 51.

The square root of 137965569 is about 11745.8745523694. The cubic root of 137965569 is about 516.7219440453.

The spelling of 137965569 in words is "one hundred thirty-seven million, nine hundred sixty-five thousand, five hundred sixty-nine".