647713264 has 40 divisors (see below), whose sum is σ = 1374220080. Its totient is φ = 293299200.

The previous prime is 647713237. The next prime is 647713273. The reversal of 647713264 is 462317746.

647713264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40504 + ... + 54184.

It is an arithmetic number, because the mean of its divisors is an integer number (34355502).

Almost surely, 2^647713264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647713264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687110040).

647713264 is an abundant number, since it is smaller than the sum of its proper divisors (726506816).

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

647713264 is a wasteful number, since it uses less digits than its factorization.

647713264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13969 (or 13963 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The square root of 647713264 is about 25450.2114725988. The cubic root of 647713264 is about 865.2220860472. Note that the first 3 decimals are identical.

The spelling of 647713264 in words is "six hundred forty-seven million, seven hundred thirteen thousand, two hundred sixty-four".