6991304 has 8 divisors (see below), whose sum is σ = 13108710. Its totient is φ = 3495648.

The previous prime is 6991289. The next prime is 6991319. The reversal of 6991304 is 4031996.

It is an interprime number because it is at equal distance from previous prime (6991289) and next prime (6991319).

It can be written as a sum of positive squares in only one way, i.e., 6770404 + 220900 = 2602^2 + 470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436949 + ... + 436964.

Almost surely, 2^6991304 is an apocalyptic number.

It is an amenable number.

6991304 is a deficient number, since it is larger than the sum of its proper divisors (6117406).

6991304 is a wasteful number, since it uses less digits than its factorization.

6991304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873919 (or 873915 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 6991304 is about 2644.1074108288. The cubic root of 6991304 is about 191.2138718833.

The spelling of 6991304 in words is "six million, nine hundred ninety-one thousand, three hundred four".