6398727 has 8 divisors (see below), whose sum is σ = 8676480. Its totient is φ = 4193400.

The previous prime is 6398723. The next prime is 6398729. The reversal of 6398727 is 7278936.

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

It is not a de Polignac number, because 6398727 - 2² = 6398723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6398723) 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, 17899 + ... + 18252.

It is an arithmetic number, because the mean of its divisors is an integer number (1084560).

Almost surely, 2^6398727 is an apocalyptic number.

6398727 is a deficient number, since it is larger than the sum of its proper divisors (2277753).

6398727 is a wasteful number, since it uses less digits than its factorization.

6398727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36213.

The product of its digits is 127008, while the sum is 42.

The square root of 6398727 is about 2529.5705169060. The cubic root of 6398727 is about 185.6512426479.

It can be divided in two parts, 63 and 98727, that added together give a triangular number (98790 = T₄₄₄).

The spelling of 6398727 in words is "six million, three hundred ninety-eight thousand, seven hundred twenty-seven".