136662797 has 6 divisors (see below), whose sum is σ = 138039594. Its totient is φ = 135299600.

The previous prime is 136662791. The next prime is 136662857. The reversal of 136662797 is 797266631.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 53743561 + 82919236 = 7331^2 + 9106^2 .

It is not a de Polignac number, because 136662797 - 2⁶ = 136662733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136662791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3503 + ... + 16899.

It is an arithmetic number, because the mean of its divisors is an integer number (23006599).

Almost surely, 2^136662797 is an apocalyptic number.

It is an amenable number.

136662797 is a deficient number, since it is larger than the sum of its proper divisors (1376797).

136662797 is an equidigital number, since it uses as much as digits as its factorization.

136662797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13599 (or 13498 counting only the distinct ones).

The product of its digits is 571536, while the sum is 47.

The square root of 136662797 is about 11690.2864378936. The cubic root of 136662797 is about 515.0903753168.

The spelling of 136662797 in words is "one hundred thirty-six million, six hundred sixty-two thousand, seven hundred ninety-seven".