664305054 has 48 divisors (see below), whose sum is σ = 1556901648. Its totient is φ = 188404608.

The previous prime is 664305029. The next prime is 664305091. The reversal of 664305054 is 450503466.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32032 + ... + 48524.

It is an arithmetic number, because the mean of its divisors is an integer number (32435451).

Almost surely, 2^664305054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664305054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778450824).

664305054 is an abundant number, since it is smaller than the sum of its proper divisors (892596594).

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

664305054 is a wasteful number, since it uses less digits than its factorization.

664305054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16649 (or 16642 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 664305054 is about 25774.1159693208. The cubic root of 664305054 is about 872.5477149517.

The spelling of 664305054 in words is "six hundred sixty-four million, three hundred five thousand, fifty-four".