136597537 has 2 divisors, whose sum is σ = 136597538. Its totient is φ = 136597536.

The previous prime is 136597507. The next prime is 136597543. The reversal of 136597537 is 735795631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75272976 + 61324561 = 8676^2 + 7831^2 .

It is an emirp because it is prime and its reverse (735795631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136597537 - 2²⁷ = 2379809 is a prime.

It is a super-2 number, since 2×136597537² = 37317774228932738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136597507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68298768 + 68298769.

It is an arithmetic number, because the mean of its divisors is an integer number (68298769).

Almost surely, 2^136597537 is an apocalyptic number.

It is an amenable number.

136597537 is a deficient number, since it is larger than the sum of its proper divisors (1).

136597537 is an equidigital number, since it uses as much as digits as its factorization.

136597537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 595350, while the sum is 46.

The square root of 136597537 is about 11687.4948983946. The cubic root of 136597537 is about 515.0083726291.

The spelling of 136597537 in words is "one hundred thirty-six million, five hundred ninety-seven thousand, five hundred thirty-seven".