476643645 has 48 divisors (see below), whose sum is σ = 841903920. Its totient is φ = 249412608.

The previous prime is 476643619. The next prime is 476643659. The reversal of 476643645 is 546346674.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 11249316 + 465394329 = 3354^2 + 21573^2 .

It is not a de Polignac number, because 476643645 - 2⁵ = 476643613 is a prime.

It is a super-3 number, since 3×476643645³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 476643645.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1225111 + ... + 1225499.

It is an arithmetic number, because the mean of its divisors is an integer number (17539665).

Almost surely, 2^476643645 is an apocalyptic number.

476643645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

476643645 is a deficient number, since it is larger than the sum of its proper divisors (365260275).

476643645 is a wasteful number, since it uses less digits than its factorization.

476643645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 843 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The square root of 476643645 is about 21832.1699562824. The cubic root of 476643645 is about 781.1443016896.

The spelling of 476643645 in words is "four hundred seventy-six million, six hundred forty-three thousand, six hundred forty-five".