136923727 has 4 divisors (see below), whose sum is σ = 138203496. Its totient is φ = 135643960.

The previous prime is 136923701. The next prime is 136923733. The reversal of 136923727 is 727329631.

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

It is a cyclic number.

It is not a de Polignac number, because 136923727 - 2⁷ = 136923599 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136923727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136923767) 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, 639724 + ... + 639937.

It is an arithmetic number, because the mean of its divisors is an integer number (34550874).

Almost surely, 2^136923727 is an apocalyptic number.

136923727 is a deficient number, since it is larger than the sum of its proper divisors (1279769).

136923727 is a wasteful number, since it uses less digits than its factorization.

136923727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279768.

The product of its digits is 95256, while the sum is 40.

The square root of 136923727 is about 11701.4412360187. The cubic root of 136923727 is about 515.4179872371.

The spelling of 136923727 in words is "one hundred thirty-six million, nine hundred twenty-three thousand, seven hundred twenty-seven".