473918661 has 16 divisors (see below), whose sum is σ = 707635200. Its totient is φ = 313455744.

The previous prime is 473918587. The next prime is 473918677. The reversal of 473918661 is 166819374.

It is a happy number.

It is not a de Polignac number, because 473918661 - 2¹⁰ = 473917637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (473918461) 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 15 ways as a sum of consecutive naturals, for example, 65676 + ... + 72533.

It is an arithmetic number, because the mean of its divisors is an integer number (44227200).

Almost surely, 2^473918661 is an apocalyptic number.

It is an amenable number.

473918661 is a deficient number, since it is larger than the sum of its proper divisors (233716539).

473918661 is a wasteful number, since it uses less digits than its factorization.

473918661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138345 (or 138339 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 473918661 is about 21769.6729649299. The cubic root of 473918661 is about 779.6528484761.

The spelling of 473918661 in words is "four hundred seventy-three million, nine hundred eighteen thousand, six hundred sixty-one".