136923697 has 4 divisors (see below), whose sum is σ = 137203056. Its totient is φ = 136644340.

The previous prime is 136923673. The next prime is 136923701. The reversal of 136923697 is 796329631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 796329631 = 107 ⋅7442333.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136923697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136923637) 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, 138943 + ... + 139924.

It is an arithmetic number, because the mean of its divisors is an integer number (34300764).

Almost surely, 2^136923697 is an apocalyptic number.

It is an amenable number.

136923697 is a deficient number, since it is larger than the sum of its proper divisors (279359).

136923697 is an equidigital number, since it uses as much as digits as its factorization.

136923697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279358.

The product of its digits is 367416, while the sum is 46.

The square root of 136923697 is about 11701.4399541253. The cubic root of 136923697 is about 515.4179495944.

The spelling of 136923697 in words is "one hundred thirty-six million, nine hundred twenty-three thousand, six hundred ninety-seven".