136993855 has 8 divisors (see below), whose sum is σ = 165848112. Its totient is φ = 108624768.

The previous prime is 136993849. The next prime is 136993859. The reversal of 136993855 is 558399631.

It is a happy number.

136993855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136993855 - 2⁹ = 136993343 is a prime.

It is a super-2 number, since 2×136993855² = 37534632615522050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136993799 and 136993808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136993859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120669 + ... + 121798.

It is an arithmetic number, because the mean of its divisors is an integer number (20731014).

Almost surely, 2^136993855 is an apocalyptic number.

136993855 is a deficient number, since it is larger than the sum of its proper divisors (28854257).

136993855 is a wasteful number, since it uses less digits than its factorization.

136993855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242585.

The product of its digits is 874800, while the sum is 49.

The square root of 136993855 is about 11704.4374063857. The cubic root of 136993855 is about 515.5059658131.

The spelling of 136993855 in words is "one hundred thirty-six million, nine hundred ninety-three thousand, eight hundred fifty-five".