475465640 has 32 divisors (see below), whose sum is σ = 1152091080. Its totient is φ = 175556352.

The previous prime is 475465559. The next prime is 475465649. The reversal of 475465640 is 46564574.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 339370084 + 136095556 = 18422^2 + 11666^2 .

It is not an unprimeable number, because it can be changed into a prime (475465649) 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, 456659 + ... + 457698.

Almost surely, 2^475465640 is an apocalyptic number.

475465640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

475465640 is an abundant number, since it is smaller than the sum of its proper divisors (676625440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

475465640 is a wasteful number, since it uses less digits than its factorization.

475465640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914381 (or 914377 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 41.

The square root of 475465640 is about 21805.1746152146. The cubic root of 475465640 is about 780.5002489000.

The spelling of 475465640 in words is "four hundred seventy-five million, four hundred sixty-five thousand, six hundred forty".