136678757 has 2 divisors, whose sum is σ = 136678758. Its totient is φ = 136678756.

The previous prime is 136678741. The next prime is 136678831. The reversal of 136678757 is 757876631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135815716 + 863041 = 11654^2 + 929^2 .

It is a cyclic number.

It is not a de Polignac number, because 136678757 - 2⁴ = 136678741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136675757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68339378 + 68339379.

It is an arithmetic number, because the mean of its divisors is an integer number (68339379).

Almost surely, 2^136678757 is an apocalyptic number.

It is an amenable number.

136678757 is a deficient number, since it is larger than the sum of its proper divisors (1).

136678757 is an equidigital number, since it uses as much as digits as its factorization.

136678757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1481760, while the sum is 50.

The square root of 136678757 is about 11690.9690359696. The cubic root of 136678757 is about 515.1104259391.

The spelling of 136678757 in words is "one hundred thirty-six million, six hundred seventy-eight thousand, seven hundred fifty-seven".