66464759 has 2 divisors, whose sum is σ = 66464760. Its totient is φ = 66464758.

The previous prime is 66464701. The next prime is 66464773. The reversal of 66464759 is 95746466.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66464759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66464059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33232379 + 33232380.

It is an arithmetic number, because the mean of its divisors is an integer number (33232380).

Almost surely, 2^66464759 is an apocalyptic number.

66464759 is a deficient number, since it is larger than the sum of its proper divisors (1).

66464759 is an equidigital number, since it uses as much as digits as its factorization.

66464759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 47.

The square root of 66464759 is about 8152.5921644591. The cubic root of 66464759 is about 405.0703713516.

The spelling of 66464759 in words is "sixty-six million, four hundred sixty-four thousand, seven hundred fifty-nine".