654864 has 40 divisors (see below), whose sum is σ = 1934400. Its totient is φ = 187008.

The previous prime is 654853. The next prime is 654877. The reversal of 654864 is 468456.

It is a happy number.

654864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

654864 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639 + ... + 1310.

It is an arithmetic number, because the mean of its divisors is an integer number (48360).

2⁶⁵⁴⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

654864 is an abundant number, since it is smaller than the sum of its proper divisors (1279536).

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

654864 is a wasteful number, since it uses less digits than its factorization.

654864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967 (or 1961 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 654864 is about 809.2366773695. The cubic root of 654864 is about 86.8394449332.

The spelling of 654864 in words is "six hundred fifty-four thousand, eight hundred sixty-four".