6990885 has 48 divisors (see below), whose sum is σ = 13703040. Its totient is φ = 3265920.

The previous prime is 6990881. The next prime is 6990889. The reversal of 6990885 is 5880996.

It is an interprime number because it is at equal distance from previous prime (6990881) and next prime (6990889).

It is not a de Polignac number, because 6990885 - 2² = 6990881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6990885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14112 + ... + 14598.

It is an arithmetic number, because the mean of its divisors is an integer number (285480).

Almost surely, 2^6990885 is an apocalyptic number.

It is an amenable number.

6990885 is a deficient number, since it is larger than the sum of its proper divisors (6712155).

6990885 is a wasteful number, since it uses less digits than its factorization.

6990885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 6990885 is about 2644.0281768544. The cubic root of 6990885 is about 191.2100518895.

It can be divided in two parts, 6990 and 885, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 6990885 in words is "six million, nine hundred ninety thousand, eight hundred eighty-five".