664462000 has 80 divisors (see below), whose sum is σ = 1701266112. Its totient is φ = 250137600.

The previous prime is 664461979. The next prime is 664462003. The reversal of 664462000 is 264466.

664462000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 664462000.

It is not an unprimeable number, because it can be changed into a prime (664462003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24229 + ... + 43771.

Almost surely, 2^664462000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664462000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (850633056).

664462000 is an abundant number, since it is smaller than the sum of its proper divisors (1036804112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664462000 is a wasteful number, since it uses less digits than its factorization.

664462000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19583 (or 19567 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 664462000 is about 25777.1604332207. The cubic root of 664462000 is about 872.6164243946.

It can be divided in two parts, 6644 and 62000, that added together give a square (68644 = 262²).

The spelling of 664462000 in words is "six hundred sixty-four million, four hundred sixty-two thousand".