664130457 has 12 divisors (see below), whose sum is σ = 963491620. Its totient is φ = 440818848.

The previous prime is 664130437. The next prime is 664130459. The reversal of 664130457 is 754031466.

It is a happy number.

664130457 is a `hidden beast` number, since 6 + 641 + 3 + 0 + 4 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 347859801 + 316270656 = 18651^2 + 17784^2 .

It is not a de Polignac number, because 664130457 - 2¹⁸ = 663868313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664130459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159058 + ... + 163179.

Almost surely, 2^664130457 is an apocalyptic number.

It is an amenable number.

664130457 is a deficient number, since it is larger than the sum of its proper divisors (299361163).

664130457 is a wasteful number, since it uses less digits than its factorization.

664130457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322472 (or 322469 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 664130457 is about 25770.7286858560. The cubic root of 664130457 is about 872.4712653542.

The spelling of 664130457 in words is "six hundred sixty-four million, one hundred thirty thousand, four hundred fifty-seven".