6990977369 has 16 divisors (see below), whose sum is σ = 7331917824. Its totient is φ = 6657891600.

The previous prime is 6990977347. The next prime is 6990977377. The reversal of 6990977369 is 9637790996.

It is a cyclic number.

It is not a de Polignac number, because 6990977369 - 2¹² = 6990973273 is a prime.

It is a super-2 number, since 2×6990977369² = 97747529147740324322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6990977069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671534 + ... + 681864.

It is an arithmetic number, because the mean of its divisors is an integer number (458244864).

Almost surely, 2^6990977369 is an apocalyptic number.

It is an amenable number.

6990977369 is a deficient number, since it is larger than the sum of its proper divisors (340940455).

6990977369 is a wasteful number, since it uses less digits than its factorization.

6990977369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10708.

The product of its (nonzero) digits is 34720812, while the sum is 65.

The square root of 6990977369 is about 83612.0647335060. The cubic root of 6990977369 is about 1912.1089402434.

The spelling of 6990977369 in words is "six billion, nine hundred ninety million, nine hundred seventy-seven thousand, three hundred sixty-nine".