664602611 has 2 divisors, whose sum is σ = 664602612. Its totient is φ = 664602610.

The previous prime is 664602559. The next prime is 664602623. The reversal of 664602611 is 116206466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664602611 - 2¹⁴ = 664586227 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_34512962 and since 664602611 and 34512962 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (664602511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332301305 + 332301306.

It is an arithmetic number, because the mean of its divisors is an integer number (332301306).

Almost surely, 2^664602611 is an apocalyptic number.

664602611 is a deficient number, since it is larger than the sum of its proper divisors (1).

664602611 is an equidigital number, since it uses as much as digits as its factorization.

664602611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 664602611 is about 25779.8877227966. The cubic root of 664602611 is about 872.6779733440.

The spelling of 664602611 in words is "six hundred sixty-four million, six hundred two thousand, six hundred eleven".