647214768 has 60 divisors (see below), whose sum is σ = 1834262560. Its totient is φ = 213003648.

The previous prime is 647214761. The next prime is 647214773. The reversal of 647214768 is 867412746.

647214768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (647214761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17071 + ... + 39822.

Almost surely, 2^647214768 is an apocalyptic number.

It is an amenable number.

647214768 is an abundant number, since it is smaller than the sum of its proper divisors (1187047792).

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

647214768 is a wasteful number, since it uses less digits than its factorization.

647214768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56986 (or 56977 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 647214768 is about 25440.4160343340. The cubic root of 647214768 is about 865.0000637063. Note that the first 4 decimals are identical.

The spelling of 647214768 in words is "six hundred forty-seven million, two hundred fourteen thousand, seven hundred sixty-eight".