647911674 has 24 divisors (see below), whose sum is σ = 1404511680. Its totient is φ = 215862408.

The previous prime is 647911673. The next prime is 647911717. The reversal of 647911674 is 476119746.

It is not an unprimeable number, because it can be changed into a prime (647911673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33297 + ... + 49035.

It is an arithmetic number, because the mean of its divisors is an integer number (58521320).

Almost surely, 2^647911674 is an apocalyptic number.

647911674 is an abundant number, since it is smaller than the sum of its proper divisors (756600006).

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

647911674 is a wasteful number, since it uses less digits than its factorization.

647911674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18034 (or 18031 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 647911674 is about 25454.1091771054. The cubic root of 647911674 is about 865.3104230721.

The spelling of 647911674 in words is "six hundred forty-seven million, nine hundred eleven thousand, six hundred seventy-four".