549640366 has 16 divisors (see below), whose sum is σ = 902016000. Its totient is φ = 249113080.

The previous prime is 549640363. The next prime is 549640373. The reversal of 549640366 is 663046945.

It is a super-2 number, since 2×549640366² = 604209063873227912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549640363) by changing a digit.

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, 28366 + ... + 43633.

It is an arithmetic number, because the mean of its divisors is an integer number (56376000).

Almost surely, 2^549640366 is an apocalyptic number.

549640366 is a deficient number, since it is larger than the sum of its proper divisors (352375634).

549640366 is a wasteful number, since it uses less digits than its factorization.

549640366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72359.

The product of its (nonzero) digits is 466560, while the sum is 43.

The square root of 549640366 is about 23444.4101226710. The cubic root of 549640366 is about 819.1426523992.

The spelling of 549640366 in words is "five hundred forty-nine million, six hundred forty thousand, three hundred sixty-six".