6989904 has 30 divisors (see below), whose sum is σ = 19562426. Its totient is φ = 2329920.

The previous prime is 6989869. The next prime is 6989921. The reversal of 6989904 is 4099896.

6989904 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in only one way, i.e., 3920400 + 3069504 = 1980^2 + 1752^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6989904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24127 + ... + 24414.

Almost surely, 2^6989904 is an apocalyptic number.

It is an amenable number.

6989904 is an abundant number, since it is smaller than the sum of its proper divisors (12572522).

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

6989904 is a wasteful number, since it uses less digits than its factorization.

6989904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48555 (or 48546 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 6989904 is about 2643.8426579507. The cubic root of 6989904 is about 191.2011075839.

The spelling of 6989904 in words is "six million, nine hundred eighty-nine thousand, nine hundred four".