3199687056 has 160 divisors (see below), whose sum is σ = 9542246400. Its totient is φ = 1025792640.

The previous prime is 3199687033. The next prime is 3199687081. The reversal of 3199687056 is 6507869913.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 3199686993 and 3199687011.

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, 1196601 + ... + 1199271.

It is an arithmetic number, because the mean of its divisors is an integer number (59639040).

Almost surely, 2^3199687056 is an apocalyptic number.

3199687056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3199687056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4771123200).

3199687056 is an abundant number, since it is smaller than the sum of its proper divisors (6342559344).

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

3199687056 is a wasteful number, since it uses less digits than its factorization.

3199687056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794 (or 2782 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The square root of 3199687056 is about 56565.7763669871. The cubic root of 3199687056 is about 1473.5645605754.

The spelling of 3199687056 in words is "three billion, one hundred ninety-nine million, six hundred eighty-seven thousand, fifty-six".