6742399 has 8 divisors (see below), whose sum is σ = 6976800. Its totient is φ = 6510816.

The previous prime is 6742369. The next prime is 6742423. The reversal of 6742399 is 9932476.

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

It is not a de Polignac number, because 6742399 - 2⁹ = 6741887 is a prime.

It is a Duffinian number.

6742399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6742349) 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, 4902 + ... + 6124.

It is an arithmetic number, because the mean of its divisors is an integer number (872100).

Almost surely, 2^6742399 is an apocalyptic number.

6742399 is a deficient number, since it is larger than the sum of its proper divisors (234401).

6742399 is a wasteful number, since it uses less digits than its factorization.

6742399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409.

The product of its digits is 81648, while the sum is 40.

The square root of 6742399 is about 2596.6129861803. The cubic root of 6742399 is about 188.9171926188.

The spelling of 6742399 in words is "six million, seven hundred forty-two thousand, three hundred ninety-nine".