664304415 has 8 divisors (see below), whose sum is σ = 1062887088. Its totient is φ = 354295680.

The previous prime is 664304413. The next prime is 664304483. The reversal of 664304415 is 514403466.

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

It is not a de Polignac number, because 664304415 - 2¹ = 664304413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664304413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22143466 + ... + 22143495.

It is an arithmetic number, because the mean of its divisors is an integer number (132860886).

Almost surely, 2^664304415 is an apocalyptic number.

664304415 is a deficient number, since it is larger than the sum of its proper divisors (398582673).

664304415 is a wasteful number, since it uses less digits than its factorization.

664304415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44286969.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 664304415 is about 25774.1035731604. The cubic root of 664304415 is about 872.5474351815.

The spelling of 664304415 in words is "six hundred sixty-four million, three hundred four thousand, four hundred fifteen".