6481597 has 4 divisors (see below), whose sum is σ = 6570460. Its totient is φ = 6392736.

The previous prime is 6481591. The next prime is 6481609. The reversal of 6481597 is 7951846.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4990756 + 1490841 = 2234^2 + 1221^2 .

It is a cyclic number.

It is not a de Polignac number, because 6481597 - 2¹¹ = 6479549 is a prime.

It is a super-2 number, since 2×6481597² = 84022199340818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6481591) 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, 44322 + ... + 44467.

It is an arithmetic number, because the mean of its divisors is an integer number (1642615).

Almost surely, 2^6481597 is an apocalyptic number.

It is an amenable number.

6481597 is a deficient number, since it is larger than the sum of its proper divisors (88863).

6481597 is an equidigital number, since it uses as much as digits as its factorization.

6481597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88862.

The product of its digits is 60480, while the sum is 40.

The square root of 6481597 is about 2545.8980733721. The cubic root of 6481597 is about 186.4492646866.

The spelling of 6481597 in words is "six million, four hundred eighty-one thousand, five hundred ninety-seven".