6397501 has 16 divisors (see below), whose sum is σ = 7331328. Its totient is φ = 5529600.

The previous prime is 6397493. The next prime is 6397511. The reversal of 6397501 is 1057936.

It is a 7-Lehmer number, since φ(6397501) divides (6397501-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 6397501 - 2³ = 6397493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6397511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24765 + ... + 25021.

It is an arithmetic number, because the mean of its divisors is an integer number (458208).

Almost surely, 2^6397501 is an apocalyptic number.

It is an amenable number.

6397501 is a deficient number, since it is larger than the sum of its proper divisors (933827).

6397501 is a wasteful number, since it uses less digits than its factorization.

6397501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 6397501 is about 2529.3281716693. The cubic root of 6397501 is about 185.6393849267.

The spelling of 6397501 in words is "six million, three hundred ninety-seven thousand, five hundred one".