647713311 has 64 divisors (see below), whose sum is σ = 1085644800. Its totient is φ = 342074880.

The previous prime is 647713309. The next prime is 647713351. The reversal of 647713311 is 113317746.

It is not a de Polignac number, because 647713311 - 2¹ = 647713309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647713301) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1066770 + ... + 1067376.

It is an arithmetic number, because the mean of its divisors is an integer number (16963200).

Almost surely, 2^647713311 is an apocalyptic number.

647713311 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

647713311 is a deficient number, since it is larger than the sum of its proper divisors (437931489).

647713311 is a wasteful number, since it uses less digits than its factorization.

647713311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 695 counting only the distinct ones).

The product of its digits is 10584, while the sum is 33.

The square root of 647713311 is about 25450.2123959703. The cubic root of 647713311 is about 865.2221069749. Note that the first 3 decimals are identical.

The spelling of 647713311 in words is "six hundred forty-seven million, seven hundred thirteen thousand, three hundred eleven".