451000664 has 8 divisors (see below), whose sum is σ = 845626260. Its totient is φ = 225500328.

The previous prime is 451000657. The next prime is 451000681. The reversal of 451000664 is 466000154.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28187534 + ... + 28187549.

Almost surely, 2^451000664 is an apocalyptic number.

It is an amenable number.

451000664 is a deficient number, since it is larger than the sum of its proper divisors (394625596).

451000664 is a wasteful number, since it uses less digits than its factorization.

451000664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56375089 (or 56375085 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 451000664 is about 21236.7762148590. The cubic root of 451000664 is about 766.8770254101.

The spelling of 451000664 in words is "four hundred fifty-one million, six hundred sixty-four", and thus it is an aban number.