647443475 has 48 divisors (see below), whose sum is σ = 949605888. Its totient is φ = 428682240.

The previous prime is 647443439. The next prime is 647443481. The reversal of 647443475 is 574344746.

It is not a de Polignac number, because 647443475 - 2¹² = 647439379 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 729482 + ... + 730368.

It is an arithmetic number, because the mean of its divisors is an integer number (19783456).

Almost surely, 2^647443475 is an apocalyptic number.

647443475 is a deficient number, since it is larger than the sum of its proper divisors (302162413).

647443475 is a wasteful number, since it uses less digits than its factorization.

647443475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044 (or 1039 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 44.

The square root of 647443475 is about 25444.9105913147. The cubic root of 647443475 is about 865.1019403843.

The spelling of 647443475 in words is "six hundred forty-seven million, four hundred forty-three thousand, four hundred seventy-five".