6397490 has 32 divisors (see below), whose sum is σ = 13227840. Its totient is φ = 2203200.

The previous prime is 6397463. The next prime is 6397493. The reversal of 6397490 is 947936.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (6397493) 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 in 15 ways as a sum of consecutive naturals, for example, 560 + ... + 3620.

It is an arithmetic number, because the mean of its divisors is an integer number (413370).

Almost surely, 2^6397490 is an apocalyptic number.

6397490 is an abundant number, since it is smaller than the sum of its proper divisors (6830350).

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

6397490 is a wasteful number, since it uses less digits than its factorization.

6397490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3098.

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

The square root of 6397490 is about 2529.3259971779. The cubic root of 6397490 is about 185.6392785292.

The spelling of 6397490 in words is "six million, three hundred ninety-seven thousand, four hundred ninety".