136897965 has 32 divisors (see below), whose sum is σ = 249960960. Its totient is φ = 71036352.

The previous prime is 136897963. The next prime is 136897979. The reversal of 136897965 is 569798631.

It is not a de Polignac number, because 136897965 - 2¹ = 136897963 is a prime.

It is a super-2 number, since 2×136897965² = 37482105642282450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136897961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8709 + ... + 18698.

It is an arithmetic number, because the mean of its divisors is an integer number (7811280).

Almost surely, 2^136897965 is an apocalyptic number.

136897965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136897965 is a deficient number, since it is larger than the sum of its proper divisors (113062995).

136897965 is a wasteful number, since it uses less digits than its factorization.

136897965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27458 (or 27452 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 136897965 is about 11700.3403796642. The cubic root of 136897965 is about 515.3856601615.

The spelling of 136897965 in words is "one hundred thirty-six million, eight hundred ninety-seven thousand, nine hundred sixty-five".