6739431 has 8 divisors (see below), whose sum is σ = 9275904. Its totient is φ = 4347960.

The previous prime is 6739423. The next prime is 6739451. The reversal of 6739431 is 1349376.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6739431 - 2³ = 6739423 is a prime.

It is a super-2 number, since 2×6739431² = 90839860407522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

6739431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6739392 and 6739401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6739451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36141 + ... + 36326.

It is an arithmetic number, because the mean of its divisors is an integer number (1159488).

Almost surely, 2^6739431 is an apocalyptic number.

6739431 is a deficient number, since it is larger than the sum of its proper divisors (2536473).

6739431 is a wasteful number, since it uses less digits than its factorization.

6739431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72501.

The product of its digits is 13608, while the sum is 33.

The square root of 6739431 is about 2596.0414095311. The cubic root of 6739431 is about 188.8894681387.

The spelling of 6739431 in words is "six million, seven hundred thirty-nine thousand, four hundred thirty-one".