136971697 has 2 divisors, whose sum is σ = 136971698. Its totient is φ = 136971696.

The previous prime is 136971691. The next prime is 136971721. The reversal of 136971697 is 796179631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125350416 + 11621281 = 11196^2 + 3409^2 .

It is a cyclic number.

It is not a de Polignac number, because 136971697 - 2¹⁵ = 136938929 is a prime.

It is a super-2 number, since 2×136971697² = 37522491558119618, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136971697.

It is not a weakly prime, because it can be changed into another prime (136971691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68485848 + 68485849.

It is an arithmetic number, because the mean of its divisors is an integer number (68485849).

Almost surely, 2^136971697 is an apocalyptic number.

It is an amenable number.

136971697 is a deficient number, since it is larger than the sum of its proper divisors (1).

136971697 is an equidigital number, since it uses as much as digits as its factorization.

136971697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 49.

The square root of 136971697 is about 11703.4908040294. The cubic root of 136971697 is about 515.4781708995.

The spelling of 136971697 in words is "one hundred thirty-six million, nine hundred seventy-one thousand, six hundred ninety-seven".