549966664 has 32 divisors (see below), whose sum is σ = 1114787520. Its totient is φ = 252853056.

The previous prime is 549966649. The next prime is 549966707. The reversal of 549966664 is 466669945.

It is a super-2 number, since 2×549966664² = 604926663022577792, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 17299 + ... + 37405.

It is an arithmetic number, because the mean of its divisors is an integer number (34837110).

Almost surely, 2^549966664 is an apocalyptic number.

It is an amenable number.

549966664 is an abundant number, since it is smaller than the sum of its proper divisors (564820856).

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

549966664 is a wasteful number, since it uses less digits than its factorization.

549966664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20389 (or 20385 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 55.

The square root of 549966664 is about 23451.3680624393. The cubic root of 549966664 is about 819.3047169972.

The spelling of 549966664 in words is "five hundred forty-nine million, nine hundred sixty-six thousand, six hundred sixty-four".