33686364 has 12 divisors (see below), whose sum is σ = 78601544. Its totient is φ = 11228784.

The previous prime is 33686363. The next prime is 33686381. The reversal of 33686364 is 46368633.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×33686364² = 2269542239080992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33686363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1403587 + ... + 1403610.

Almost surely, 2^33686364 is an apocalyptic number.

It is an amenable number.

33686364 is an abundant number, since it is smaller than the sum of its proper divisors (44915180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33686364 is a wasteful number, since it uses less digits than its factorization.

33686364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807204 (or 2807202 counting only the distinct ones).

The product of its digits is 186624, while the sum is 39.

The square root of 33686364 is about 5803.9955203291. The cubic root of 33686364 is about 322.9619651879.

The spelling of 33686364 in words is "thirty-three million, six hundred eighty-six thousand, three hundred sixty-four".