33664531 has 2 divisors, whose sum is σ = 33664532. Its totient is φ = 33664530.

The previous prime is 33664493. The next prime is 33664537. The reversal of 33664531 is 13546633.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33664531 - 2¹¹ = 33662483 is a prime.

It is a super-2 number, since 2×33664531² = 2266601294899922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33664493 and 33664502.

It is not a weakly prime, because it can be changed into another prime (33664537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16832265 + 16832266.

It is an arithmetic number, because the mean of its divisors is an integer number (16832266).

Almost surely, 2^33664531 is an apocalyptic number.

33664531 is a deficient number, since it is larger than the sum of its proper divisors (1).

33664531 is an equidigital number, since it uses as much as digits as its factorization.

33664531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 31.

The square root of 33664531 is about 5802.1143559913. The cubic root of 33664531 is about 322.8921767863.

The spelling of 33664531 in words is "thirty-three million, six hundred sixty-four thousand, five hundred thirty-one".