647951468 has 6 divisors (see below), whose sum is σ = 1133915076. Its totient is φ = 323975732.

The previous prime is 647951459. The next prime is 647951503. The reversal of 647951468 is 864159746.

It is a super-2 number, since 2×647951468² = 839682209766710048, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 80993930 + ... + 80993937.

It is an arithmetic number, because the mean of its divisors is an integer number (188985846).

Almost surely, 2^647951468 is an apocalyptic number.

It is an amenable number.

647951468 is a deficient number, since it is larger than the sum of its proper divisors (485963608).

647951468 is a wasteful number, since it uses less digits than its factorization.

647951468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161987871 (or 161987869 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The square root of 647951468 is about 25454.8908463580. The cubic root of 647951468 is about 865.3281381710.

The spelling of 647951468 in words is "six hundred forty-seven million, nine hundred fifty-one thousand, four hundred sixty-eight".