36686731 has 16 divisors (see below), whose sum is σ = 40089600. Its totient is φ = 33441408.

The previous prime is 36686729. The next prime is 36686761. The reversal of 36686731 is 13768663.

It is a cyclic number.

It is not a de Polignac number, because 36686731 - 2¹ = 36686729 is a prime.

It is a super-2 number, since 2×36686731² = 2691832462932722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36686761) 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, 79006 + ... + 79468.

It is an arithmetic number, because the mean of its divisors is an integer number (2505600).

Almost surely, 2^36686731 is an apocalyptic number.

36686731 is a deficient number, since it is larger than the sum of its proper divisors (3402869).

36686731 is a wasteful number, since it uses less digits than its factorization.

36686731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618.

The product of its digits is 108864, while the sum is 40.

The square root of 36686731 is about 6056.9572394066. The cubic root of 36686731 is about 332.2790844151.

The spelling of 36686731 in words is "thirty-six million, six hundred eighty-six thousand, seven hundred thirty-one".