6990522 has 32 divisors (see below), whose sum is σ = 17432064. Its totient is φ = 1815600.

The previous prime is 6990517. The next prime is 6990527. The reversal of 6990522 is 2250996.

It is an interprime number because it is at equal distance from previous prime (6990517) and next prime (6990527).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (6990527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7104 + ... + 8027.

It is an arithmetic number, because the mean of its divisors is an integer number (544752).

Almost surely, 2^6990522 is an apocalyptic number.

6990522 is an abundant number, since it is smaller than the sum of its proper divisors (10441542).

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

6990522 is a wasteful number, since it uses less digits than its factorization.

6990522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15154.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 6990522 is about 2643.9595307039. The cubic root of 6990522 is about 191.2067423204.

It can be divided in two parts, 6 and 990522, that added together give a triangular number (990528 = T₁₄₀₇).

The spelling of 6990522 in words is "six million, nine hundred ninety thousand, five hundred twenty-two".