36686139 has 16 divisors (see below), whose sum is σ = 56109312. Its totient is φ = 20886048.

The previous prime is 36686107. The next prime is 36686147. The reversal of 36686139 is 93168663.

It is not a de Polignac number, because 36686139 - 2⁵ = 36686107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36686139.

It is not an unprimeable number, because it can be changed into a prime (36686149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2857 + ... + 9029.

It is an arithmetic number, because the mean of its divisors is an integer number (3506832).

Almost surely, 2^36686139 is an apocalyptic number.

36686139 is a deficient number, since it is larger than the sum of its proper divisors (19423173).

36686139 is a wasteful number, since it uses less digits than its factorization.

36686139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6466.

The product of its digits is 139968, while the sum is 42.

The square root of 36686139 is about 6056.9083697873. The cubic root of 36686139 is about 332.2772971179.

The spelling of 36686139 in words is "thirty-six million, six hundred eighty-six thousand, one hundred thirty-nine".