476991653 has 4 divisors (see below), whose sum is σ = 479627148. Its totient is φ = 474356160.

The previous prime is 476991649. The next prime is 476991677. The reversal of 476991653 is 356199674.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165045409 + 311946244 = 12847^2 + 17662^2 .

It is a cyclic number.

It is not a de Polignac number, because 476991653 - 2² = 476991649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (476991643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317476 + ... + 1317837.

It is an arithmetic number, because the mean of its divisors is an integer number (119906787).

Almost surely, 2^476991653 is an apocalyptic number.

It is an amenable number.

476991653 is a deficient number, since it is larger than the sum of its proper divisors (2635495).

476991653 is a wasteful number, since it uses less digits than its factorization.

476991653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635494.

The product of its digits is 1224720, while the sum is 50.

The square root of 476991653 is about 21840.1385755677. The cubic root of 476991653 is about 781.3343656476.

The spelling of 476991653 in words is "four hundred seventy-six million, nine hundred ninety-one thousand, six hundred fifty-three".