474977661 has 8 divisors (see below), whose sum is σ = 648750144. Its totient is φ = 308928480.

The previous prime is 474977647. The next prime is 474977677. The reversal of 474977661 is 166779474.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 474977661 - 2¹⁸ = 474715517 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (474977611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930681 + ... + 1930926.

It is an arithmetic number, because the mean of its divisors is an integer number (81093768).

Almost surely, 2^474977661 is an apocalyptic number.

474977661 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

474977661 is a deficient number, since it is larger than the sum of its proper divisors (173772483).

474977661 is a wasteful number, since it uses less digits than its factorization.

474977661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861651.

The product of its digits is 1778112, while the sum is 51.

The square root of 474977661 is about 21793.9822198698. The cubic root of 474977661 is about 780.2331436524.

The spelling of 474977661 in words is "four hundred seventy-four million, nine hundred seventy-seven thousand, six hundred sixty-one".