6739889 has 12 divisors (see below), whose sum is σ = 7686000. Its totient is φ = 5891184.

The previous prime is 6739877. The next prime is 6739903. The reversal of 6739889 is 9889376.

It is a de Polignac number, because none of the positive numbers 2^k-6739889 is a prime.

It is a super-2 number, since 2×6739889² = 90852207464642, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6739289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2162 + ... + 4260.

It is an arithmetic number, because the mean of its divisors is an integer number (640500).

Almost surely, 2^6739889 is an apocalyptic number.

It is an amenable number.

6739889 is a deficient number, since it is larger than the sum of its proper divisors (946111).

6739889 is a wasteful number, since it uses less digits than its factorization.

6739889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144 (or 2131 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 6739889 is about 2596.1296192602. The cubic root of 6739889 is about 188.8937469082.

The spelling of 6739889 in words is "six million, seven hundred thirty-nine thousand, eight hundred eighty-nine".