331664467 has 2 divisors, whose sum is σ = 331664468. Its totient is φ = 331664466.

The previous prime is 331664453. The next prime is 331664521. The reversal of 331664467 is 764466133.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331664467 is a prime.

It is a super-2 number, since 2×331664467² = 220002637340788178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331664167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165832233 + 165832234.

It is an arithmetic number, because the mean of its divisors is an integer number (165832234).

Almost surely, 2^331664467 is an apocalyptic number.

331664467 is a deficient number, since it is larger than the sum of its proper divisors (1).

331664467 is an equidigital number, since it uses as much as digits as its factorization.

331664467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 40.

The square root of 331664467 is about 18211.6574479096. The cubic root of 331664467 is about 692.2022105830.

The spelling of 331664467 in words is "three hundred thirty-one million, six hundred sixty-four thousand, four hundred sixty-seven".