6990969381 has 32 divisors (see below), whose sum is σ = 10851729408. Its totient is φ = 3956279040.

The previous prime is 6990969373. The next prime is 6990969389. The reversal of 6990969381 is 1839690996.

It is an interprime number because it is at equal distance from previous prime (6990969373) and next prime (6990969389).

It is not a de Polignac number, because 6990969381 - 2³ = 6990969373 is a prime.

It is a super-2 number, since 2×6990969381² = 97747305772159046322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990969389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22186 + ... + 120308.

It is an arithmetic number, because the mean of its divisors is an integer number (339116544).

Almost surely, 2^6990969381 is an apocalyptic number.

It is an amenable number.

6990969381 is a deficient number, since it is larger than the sum of its proper divisors (3860760027).

6990969381 is a wasteful number, since it uses less digits than its factorization.

6990969381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98281.

The product of its (nonzero) digits is 5668704, while the sum is 60.

The square root of 6990969381 is about 83612.0169652664. The cubic root of 6990969381 is about 1912.1082119746.

The spelling of 6990969381 in words is "six billion, nine hundred ninety million, nine hundred sixty-nine thousand, three hundred eighty-one".