6751989 has 24 divisors (see below), whose sum is σ = 10158720. Its totient is φ = 4318272.

The previous prime is 6751981. The next prime is 6751991. The reversal of 6751989 is 9891576.

Added to its reverse (9891576) it gives a triangular number (16643565 = T₅₇₆₉).

It is not a de Polignac number, because 6751989 - 2³ = 6751981 is a prime.

It is a super-2 number, since 2×6751989² = 91178710912242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6751981) 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 23 ways as a sum of consecutive naturals, for example, 28132 + ... + 28370.

It is an arithmetic number, because the mean of its divisors is an integer number (423280).

Almost surely, 2^6751989 is an apocalyptic number.

It is an amenable number.

6751989 is a deficient number, since it is larger than the sum of its proper divisors (3406731).

6751989 is a wasteful number, since it uses less digits than its factorization.

6751989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 358 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 6751989 is about 2598.4589663876. The cubic root of 6751989 is about 189.0067184980.

Adding to 6751989 its reverse (9891576), we get a triangular number (16643565 = T₅₇₆₉).

The spelling of 6751989 in words is "six million, seven hundred fifty-one thousand, nine hundred eighty-nine".