6309719664 has 160 divisors (see below), whose sum is σ = 17144807424. Its totient is φ = 1997291520.

The previous prime is 6309719657. The next prime is 6309719693. The reversal of 6309719664 is 4669179036.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32692752 + ... + 32692944.

Almost surely, 2^6309719664 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 6309719664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8572403712).

6309719664 is an abundant number, since it is smaller than the sum of its proper divisors (10835087760).

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

6309719664 is a wasteful number, since it uses less digits than its factorization.

6309719664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 6309719664 is about 79433.7438624166. The cubic root of 6309719664 is about 1847.8640714474.

The spelling of 6309719664 in words is "six billion, three hundred nine million, seven hundred nineteen thousand, six hundred sixty-four".