664463045 has 8 divisors (see below), whose sum is σ = 804808224. Its totient is φ = 526602064.

The previous prime is 664463039. The next prime is 664463089. The reversal of 664463045 is 540364466.

It is a happy number.

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 664463045 - 2¹⁶ = 664397509 is a prime.

It is a super-2 number, since 2×664463045² = 883022276341344050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 620459 + ... + 621528.

It is an arithmetic number, because the mean of its divisors is an integer number (100601028).

Almost surely, 2^664463045 is an apocalyptic number.

It is an amenable number.

664463045 is a deficient number, since it is larger than the sum of its proper divisors (140345179).

664463045 is a wasteful number, since it uses less digits than its factorization.

664463045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242099.

The product of its (nonzero) digits is 207360, while the sum is 38.

The square root of 664463045 is about 25777.1807030947. The cubic root of 664463045 is about 872.6168818493.

The spelling of 664463045 in words is "six hundred sixty-four million, four hundred sixty-three thousand, forty-five".