136126657 has 4 divisors (see below), whose sum is σ = 137656260. Its totient is φ = 134597056.

The previous prime is 136126649. The next prime is 136126699. The reversal of 136126657 is 756621631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7054336 + 129072321 = 2656^2 + 11361^2 .

It is a cyclic number.

It is not a de Polignac number, because 136126657 - 2³ = 136126649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136126057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764668 + ... + 764845.

It is an arithmetic number, because the mean of its divisors is an integer number (34414065).

Almost surely, 2^136126657 is an apocalyptic number.

It is an amenable number.

136126657 is a deficient number, since it is larger than the sum of its proper divisors (1529603).

136126657 is an equidigital number, since it uses as much as digits as its factorization.

136126657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529602.

The product of its digits is 45360, while the sum is 37.

The square root of 136126657 is about 11667.3329000248. The cubic root of 136126657 is about 514.4159111539.

The spelling of 136126657 in words is "one hundred thirty-six million, one hundred twenty-six thousand, six hundred fifty-seven".