664562633 has 8 divisors (see below), whose sum is σ = 759692352. Its totient is φ = 569480976.

The previous prime is 664562629. The next prime is 664562641. The reversal of 664562633 is 336265466.

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 664562633 - 2² = 664562629 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664562603) 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, 25391 + ... + 44427.

It is an arithmetic number, because the mean of its divisors is an integer number (94961544).

Almost surely, 2^664562633 is an apocalyptic number.

It is an amenable number.

664562633 is a deficient number, since it is larger than the sum of its proper divisors (95129719).

664562633 is a wasteful number, since it uses less digits than its factorization.

664562633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24031.

The product of its digits is 466560, while the sum is 41.

The square root of 664562633 is about 25779.1123392564. The cubic root of 664562633 is about 872.6604748574.

The spelling of 664562633 in words is "six hundred sixty-four million, five hundred sixty-two thousand, six hundred thirty-three".