33868690 has 32 divisors (see below), whose sum is σ = 63037440. Its totient is φ = 13091904.

The previous prime is 33868687. The next prime is 33868691. The reversal of 33868690 is 9686833.

It is a super-2 number, since 2×33868690² = 2294176324632200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33868691) 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, 88239 + ... + 88621.

It is an arithmetic number, because the mean of its divisors is an integer number (1969920).

Almost surely, 2^33868690 is an apocalyptic number.

33868690 is a deficient number, since it is larger than the sum of its proper divisors (29168750).

33868690 is a wasteful number, since it uses less digits than its factorization.

33868690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 33868690 is about 5819.6812627497. The cubic root of 33868690 is about 323.5435897012.

The spelling of 33868690 in words is "thirty-three million, eight hundred sixty-eight thousand, six hundred ninety".