6397963 has 8 divisors (see below), whose sum is σ = 7516656. Its totient is φ = 5368800.

The previous prime is 6397961. The next prime is 6397981. The reversal of 6397963 is 3697936.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6397963 - 2¹ = 6397961 is a prime.

It is a d-powerful number, because it can be written as 6² + 3⁹ + 9³ + 7 + 9⁷ + 6³ + 3¹³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6397961) 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, 22228 + ... + 22513.

It is an arithmetic number, because the mean of its divisors is an integer number (939582).

Almost surely, 2^6397963 is an apocalyptic number.

6397963 is a deficient number, since it is larger than the sum of its proper divisors (1118693).

6397963 is a wasteful number, since it uses less digits than its factorization.

6397963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44765.

The product of its digits is 183708, while the sum is 43.

The square root of 6397963 is about 2529.4194986202. The cubic root of 6397963 is about 185.6438535117.

The spelling of 6397963 in words is "six million, three hundred ninety-seven thousand, nine hundred sixty-three".