472404645 has 12 divisors (see below), whose sum is σ = 818834796. Its totient is φ = 251949120.

The previous prime is 472404637. The next prime is 472404671. The reversal of 472404645 is 546404274.

472404645 is a `hidden beast` number, since 4 + 7 + 2 + 4 + 0 + 4 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 53670276 + 418734369 = 7326^2 + 20463^2 .

It is not a de Polignac number, because 472404645 - 2³ = 472404637 is a prime.

It is a super-2 number, since 2×472404645² = 446332297235152050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5248896 + ... + 5248985.

It is an arithmetic number, because the mean of its divisors is an integer number (68236233).

Almost surely, 2^472404645 is an apocalyptic number.

472404645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

472404645 is a deficient number, since it is larger than the sum of its proper divisors (346430151).

472404645 is a wasteful number, since it uses less digits than its factorization.

472404645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10497892 (or 10497889 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 36.

The square root of 472404645 is about 21734.8716352317. The cubic root of 472404645 is about 778.8217170146.

The spelling of 472404645 in words is "four hundred seventy-two million, four hundred four thousand, six hundred forty-five".