6891004 has 6 divisors (see below), whose sum is σ = 12059264. Its totient is φ = 3445500.

The previous prime is 6890969. The next prime is 6891011. The reversal of 6891004 is 4001986.

It is a super-2 number, since 2×6891004² = 94971872256032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 861372 + ... + 861379.

Almost surely, 2^6891004 is an apocalyptic number.

It is an amenable number.

6891004 is a deficient number, since it is larger than the sum of its proper divisors (5168260).

6891004 is a wasteful number, since it uses less digits than its factorization.

6891004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722755 (or 1722753 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 6891004 is about 2625.0721894836. The cubic root of 6891004 is about 190.2950540341.

The spelling of 6891004 in words is "six million, eight hundred ninety-one thousand, four".