475138664 has 64 divisors (see below), whose sum is σ = 1196173440. Its totient is φ = 170876160.

The previous prime is 475138649. The next prime is 475138679. The reversal of 475138664 is 466831574.

It is an interprime number because it is at equal distance from previous prime (475138649) and next prime (475138679).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21659 + ... + 37674.

It is an arithmetic number, because the mean of its divisors is an integer number (18690210).

Almost surely, 2^475138664 is an apocalyptic number.

475138664 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

475138664 is an abundant number, since it is smaller than the sum of its proper divisors (721034776).

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

475138664 is a wasteful number, since it uses less digits than its factorization.

475138664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59370 (or 59366 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The square root of 475138664 is about 21797.6756559042. The cubic root of 475138664 is about 780.3212921388.

The spelling of 475138664 in words is "four hundred seventy-five million, one hundred thirty-eight thousand, six hundred sixty-four".