6990966544 has 15 divisors (see below), whose sum is σ = 13545645703. Its totient is φ = 3495316048.

The previous prime is 6990966523. The next prime is 6990966551. The reversal of 6990966544 is 4456690996.

The square root of 6990966544 is 83612.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×6990966544² = 97747226438654607872, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 323997 + ... + 344899.

Almost surely, 2^6990966544 is an apocalyptic number.

6990966544 is the 83612-nd square number.

It is an amenable number.

6990966544 is a deficient number, since it is larger than the sum of its proper divisors (6554679159).

6990966544 is an frugal number, since it uses more digits than its factorization.

6990966544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41814 (or 20905 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 58.

The cubic root of 6990966544 is about 1912.1079533242.

The spelling of 6990966544 in words is "six billion, nine hundred ninety million, nine hundred sixty-six thousand, five hundred forty-four".