6899764032 has 280 divisors, whose sum is σ = 23606662464. Its totient is φ = 1951838208.

The previous prime is 6899763979. The next prime is 6899764037. The reversal of 6899764032 is 2304679986.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6899764032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6899764037) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3881928 + ... + 3883704.

Almost surely, 2^6899764032 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 6899764032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11803331232).

6899764032 is an abundant number, since it is smaller than the sum of its proper divisors (16706898432).

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

6899764032 is a wasteful number, since it uses less digits than its factorization.

6899764032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1896 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The square root of 6899764032 is about 83064.8182565880. The cubic root of 6899764032 is about 1903.7565597474.

The spelling of 6899764032 in words is "six billion, eight hundred ninety-nine million, seven hundred sixty-four thousand, thirty-two".