6396531 has 4 divisors (see below), whose sum is σ = 8528712. Its totient is φ = 4264352.

The previous prime is 6396491. The next prime is 6396541. The reversal of 6396531 is 1356936.

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

It is a cyclic number.

It is not a de Polignac number, because 6396531 - 2¹³ = 6388339 is a prime.

It is a super-2 number, since 2×6396531² = 81831217667922, which contains 22 as substring.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 6396492 and 6396501.

It is not an unprimeable number, because it can be changed into a prime (6396541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066086 + ... + 1066091.

It is an arithmetic number, because the mean of its divisors is an integer number (2132178).

Almost surely, 2^6396531 is an apocalyptic number.

6396531 is a deficient number, since it is larger than the sum of its proper divisors (2132181).

6396531 is a wasteful number, since it uses less digits than its factorization.

6396531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132180.

The product of its digits is 14580, while the sum is 33.

The square root of 6396531 is about 2529.1364138773. The cubic root of 6396531 is about 185.6300021325.

The spelling of 6396531 in words is "six million, three hundred ninety-six thousand, five hundred thirty-one".