666455498 has 16 divisors (see below), whose sum is σ = 1046079360. Its totient is φ = 317843856.

The previous prime is 666455497. The next prime is 666455509. The reversal of 666455498 is 894554666.

It is not an unprimeable number, because it can be changed into a prime (666455497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3665 + ... + 36692.

It is an arithmetic number, because the mean of its divisors is an integer number (65379960).

Almost surely, 2^666455498 is an apocalyptic number.

666455498 is a deficient number, since it is larger than the sum of its proper divisors (379623862).

666455498 is a wasteful number, since it uses less digits than its factorization.

666455498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40741.

The product of its digits is 6220800, while the sum is 53.

The square root of 666455498 is about 25815.7993871970. The cubic root of 666455498 is about 873.4882185849.

The spelling of 666455498 in words is "six hundred sixty-six million, four hundred fifty-five thousand, four hundred ninety-eight".