36686861 has 4 divisors (see below), whose sum is σ = 36705312. Its totient is φ = 36668412.

The previous prime is 36686851. The next prime is 36686873. The reversal of 36686861 is 16868663.

36686861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36686861 is a prime.

It is a super-3 number, since 3×36686861³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36686801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5825 + ... + 10358.

It is an arithmetic number, because the mean of its divisors is an integer number (9176328).

Almost surely, 2^36686861 is an apocalyptic number.

It is an amenable number.

36686861 is a deficient number, since it is larger than the sum of its proper divisors (18451).

36686861 is a wasteful number, since it uses less digits than its factorization.

36686861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18450.

The product of its digits is 248832, while the sum is 44.

The square root of 36686861 is about 6056.9679708580. The cubic root of 36686861 is about 332.2794768933.

The spelling of 36686861 in words is "thirty-six million, six hundred eighty-six thousand, eight hundred sixty-one".