664050967 has 2 divisors, whose sum is σ = 664050968. Its totient is φ = 664050966.

The previous prime is 664050953. The next prime is 664050973. The reversal of 664050967 is 769050466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664050967 - 2⁷ = 664050839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664050977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332025483 + 332025484.

It is an arithmetic number, because the mean of its divisors is an integer number (332025484).

Almost surely, 2^664050967 is an apocalyptic number.

664050967 is a deficient number, since it is larger than the sum of its proper divisors (1).

664050967 is an equidigital number, since it uses as much as digits as its factorization.

664050967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 664050967 is about 25769.1863860697. The cubic root of 664050967 is about 872.4364551713.

The spelling of 664050967 in words is "six hundred sixty-four million, fifty thousand, nine hundred sixty-seven".