654664 has 32 divisors (see below), whose sum is σ = 1332000. Its totient is φ = 300672.

The previous prime is 654629. The next prime is 654671. The reversal of 654664 is 466456.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8932 + ... + 9004.

It is an arithmetic number, because the mean of its divisors is an integer number (41625).

2⁶⁵⁴⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

654664 is an abundant number, since it is smaller than the sum of its proper divisors (677336).

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

654664 is a wasteful number, since it uses less digits than its factorization.

654664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 153 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 654664 is about 809.1130946907. The cubic root of 654664 is about 86.8306035772.

The spelling of 654664 in words is "six hundred fifty-four thousand, six hundred sixty-four".