6990915256 has 32 divisors (see below), whose sum is σ = 14200835040. Its totient is φ = 3207247488.

The previous prime is 6990915241. The next prime is 6990915259. The reversal of 6990915256 is 6525190996.

It is a super-2 number, since 2×6990915256² = 97745792233147091072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990915259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183891 + ... + 218626.

It is an arithmetic number, because the mean of its divisors is an integer number (443776095).

Almost surely, 2^6990915256 is an apocalyptic number.

It is an amenable number.

6990915256 is an abundant number, since it is smaller than the sum of its proper divisors (7209919784).

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

6990915256 is a wasteful number, since it uses less digits than its factorization.

6990915256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402703 (or 402699 counting only the distinct ones).

The product of its (nonzero) digits is 1312200, while the sum is 52.

The square root of 6990915256 is about 83611.6932970503. The cubic root of 6990915256 is about 1912.1032773646.

The spelling of 6990915256 in words is "six billion, nine hundred ninety million, nine hundred fifteen thousand, two hundred fifty-six".