664710049 has 8 divisors (see below), whose sum is σ = 679241088. Its totient is φ = 650195280.

The previous prime is 664710043. The next prime is 664710071. The reversal of 664710049 is 940017466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 664710049 - 2⁵ = 664710017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664710043) 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 7 ways as a sum of consecutive naturals, for example, 117414 + ... + 122944.

It is an arithmetic number, because the mean of its divisors is an integer number (84905136).

Almost surely, 2^664710049 is an apocalyptic number.

It is an amenable number.

664710049 is a deficient number, since it is larger than the sum of its proper divisors (14531039).

664710049 is a wasteful number, since it uses less digits than its factorization.

664710049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8135.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 664710049 is about 25781.9713947557. The cubic root of 664710049 is about 872.7249957916.

The spelling of 664710049 in words is "six hundred sixty-four million, seven hundred ten thousand, forty-nine".