136907786 has 16 divisors (see below), whose sum is σ = 211093344. Its totient is φ = 66557904.

The previous prime is 136907767. The next prime is 136907791. The reversal of 136907786 is 687709631.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 136907786.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16016 + ... + 23028.

It is an arithmetic number, because the mean of its divisors is an integer number (13193334).

Almost surely, 2^136907786 is an apocalyptic number.

136907786 is a deficient number, since it is larger than the sum of its proper divisors (74185558).

136907786 is a wasteful number, since it uses less digits than its factorization.

136907786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 136907786 is about 11700.7600607824. The cubic root of 136907786 is about 515.3979843805.

The spelling of 136907786 in words is "one hundred thirty-six million, nine hundred seven thousand, seven hundred eighty-six".