654166464 has 168 divisors, whose sum is σ = 2079272448. Its totient is φ = 180794880.

The previous prime is 654166451. The next prime is 654166489. The reversal of 654166464 is 464661456.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 290527 + ... + 292769.

Almost surely, 2^654166464 is an apocalyptic number.

654166464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654166464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1039636224).

654166464 is an abundant number, since it is smaller than the sum of its proper divisors (1425105984).

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

654166464 is a wasteful number, since it uses less digits than its factorization.

654166464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303 (or 2286 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 654166464 is about 25576.6781267623. The cubic root of 654166464 is about 868.0860129818.

The spelling of 654166464 in words is "six hundred fifty-four million, one hundred sixty-six thousand, four hundred sixty-four".