664482028 has 24 divisors (see below), whose sum is σ = 1350753824. Its totient is φ = 280108800.

The previous prime is 664482023. The next prime is 664482037. The reversal of 664482028 is 820284466.

It is not an unprimeable number, because it can be changed into a prime (664482023) 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, 192813 + ... + 196228.

Almost surely, 2^664482028 is an apocalyptic number.

It is an amenable number.

664482028 is an abundant number, since it is smaller than the sum of its proper divisors (686271796).

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

664482028 is a wasteful number, since it uses less digits than its factorization.

664482028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389113 (or 389111 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 664482028 is about 25777.5489137350. The cubic root of 664482028 is about 872.6251916811.

The spelling of 664482028 in words is "six hundred sixty-four million, four hundred eighty-two thousand, twenty-eight".