474445647 has 16 divisors (see below), whose sum is σ = 756950880. Its totient is φ = 291966336.

The previous prime is 474445603. The next prime is 474445667. The reversal of 474445647 is 746544474.

It is a happy number.

474445647 is a `hidden beast` number, since 47 + 4 + 44 + 564 + 7 = 666.

It is not a de Polignac number, because 474445647 - 2⁶ = 474445583 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (474445667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675498 + ... + 676199.

It is an arithmetic number, because the mean of its divisors is an integer number (47309430).

Almost surely, 2^474445647 is an apocalyptic number.

474445647 is a deficient number, since it is larger than the sum of its proper divisors (282505233).

474445647 is a wasteful number, since it uses less digits than its factorization.

474445647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351719 (or 1351713 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 45.

The square root of 474445647 is about 21781.7732749196. The cubic root of 474445647 is about 779.9417264157.

The spelling of 474445647 in words is "four hundred seventy-four million, four hundred forty-five thousand, six hundred forty-seven".