6390974 has 4 divisors (see below), whose sum is σ = 9586464. Its totient is φ = 3195486.

The previous prime is 6390971. The next prime is 6390983. The reversal of 6390974 is 4790936.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6390971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1597742 + ... + 1597745.

It is an arithmetic number, because the mean of its divisors is an integer number (2396616).

Almost surely, 2^6390974 is an apocalyptic number.

6390974 is a deficient number, since it is larger than the sum of its proper divisors (3195490).

6390974 is a wasteful number, since it uses less digits than its factorization.

6390974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195489.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 6390974 is about 2528.0375788346. The cubic root of 6390974 is about 185.5762310710.

Subtracting from 6390974 its sum of digits (38), we obtain a palindrome (6390936).

The spelling of 6390974 in words is "six million, three hundred ninety thousand, nine hundred seventy-four".