664054 has 8 divisors (see below), whose sum is σ = 1054728. Its totient is φ = 312480.

The previous prime is 664043. The next prime is 664061. The reversal of 664054 is 450466.

It is a happy number.

664054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9732 + ... + 9799.

It is an arithmetic number, because the mean of its divisors is an integer number (131841).

2⁶⁶⁴⁰⁵⁴ is an apocalyptic number.

664054 is a deficient number, since it is larger than the sum of its proper divisors (390674).

664054 is a wasteful number, since it uses less digits than its factorization.

664054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19550.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 664054 is about 814.8950852717. The cubic root of 664054 is about 87.2437783431.

The spelling of 664054 in words is "six hundred sixty-four thousand, fifty-four".