33664969 has 12 divisors (see below), whose sum is σ = 37716300. Its totient is φ = 29999424.

The previous prime is 33664951. The next prime is 33664973. The reversal of 33664969 is 96946633.

It can be written as a sum of positive squares in 6 ways, for example, as 14348944 + 19316025 = 3788^2 + 4395^2 .

It is not a de Polignac number, because 33664969 - 2⁵ = 33664937 is a prime.

It is a super-2 number, since 2×33664969² = 2266660275541922, which contains 22 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 (33664909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1467 + ... + 8335.

It is an arithmetic number, because the mean of its divisors is an integer number (3143025).

Almost surely, 2^33664969 is an apocalyptic number.

It is an amenable number.

33664969 is a deficient number, since it is larger than the sum of its proper divisors (4051331).

33664969 is a wasteful number, since it uses less digits than its factorization.

33664969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6924 (or 6911 counting only the distinct ones).

The product of its digits is 629856, while the sum is 46.

The square root of 33664969 is about 5802.1521007295. The cubic root of 33664969 is about 322.8935771341.

The spelling of 33664969 in words is "thirty-three million, six hundred sixty-four thousand, nine hundred sixty-nine".