554618664 has 160 divisors (see below), whose sum is σ = 1654408800. Its totient is φ = 173093760.

The previous prime is 554618657. The next prime is 554618717. The reversal of 554618664 is 466816455.

554618664 is a `hidden beast` number, since 55 + 461 + 86 + 64 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1317174 + ... + 1317594.

It is an arithmetic number, because the mean of its divisors is an integer number (10340055).

Almost surely, 2^554618664 is an apocalyptic number.

554618664 is a gapful number since it is divisible by the number (54) 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 554618664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (827204400).

554618664 is an abundant number, since it is smaller than the sum of its proper divisors (1099790136).

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

554618664 is a wasteful number, since it uses less digits than its factorization.

554618664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 552 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 554618664 is about 23550.3431822129. The cubic root of 554618664 is about 821.6083167757.

The spelling of 554618664 in words is "five hundred fifty-four million, six hundred eighteen thousand, six hundred sixty-four".