6391974 has 16 divisors (see below), whose sum is σ = 12909312. Its totient is φ = 2109768.

The previous prime is 6391963. The next prime is 6391991. The reversal of 6391974 is 4791936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4554 + ... + 5789.

It is an arithmetic number, because the mean of its divisors is an integer number (806832).

Almost surely, 2^6391974 is an apocalyptic number.

6391974 is an abundant number, since it is smaller than the sum of its proper divisors (6517338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6391974 is a wasteful number, since it uses less digits than its factorization.

6391974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10451.

The product of its digits is 40824, while the sum is 39.

The square root of 6391974 is about 2528.2353529685. The cubic root of 6391974 is about 185.5859096455.

The spelling of 6391974 in words is "six million, three hundred ninety-one thousand, nine hundred seventy-four".