6990078976 has 44 divisors (see below), whose sum is σ = 13985791792. Its totient is φ = 3491923968.

The previous prime is 6990078959. The next prime is 6990078983. The reversal of 6990078976 is 6798700996.

It is a super-2 number, since 2×6990078976² = 97722408181434417152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516291 + ... + 1520893.

Almost surely, 2^6990078976 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 6990078976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6992895896).

6990078976 is an abundant number, since it is smaller than the sum of its proper divisors (6995712816).

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

6990078976 is a wasteful number, since it uses less digits than its factorization.

6990078976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106 (or 6088 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 61.

The square root of 6990078976 is about 83606.6921723375. The cubic root of 6990078976 is about 1912.0270299570.

The spelling of 6990078976 in words is "six billion, nine hundred ninety million, seventy-eight thousand, nine hundred seventy-six".