6497861 has 8 divisors (see below), whose sum is σ = 6637344. Its totient is φ = 6359760.

The previous prime is 6497857. The next prime is 6497863. The reversal of 6497861 is 1687946.

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 6497861 - 2² = 6497857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6497863) 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, 19466 + ... + 19796.

It is an arithmetic number, because the mean of its divisors is an integer number (829668).

Almost surely, 2^6497861 is an apocalyptic number.

It is an amenable number.

6497861 is a deficient number, since it is larger than the sum of its proper divisors (139483).

6497861 is a wasteful number, since it uses less digits than its factorization.

6497861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its digits is 72576, while the sum is 41.

The square root of 6497861 is about 2549.0902298663. The cubic root of 6497861 is about 186.6050842068.

The spelling of 6497861 in words is "six million, four hundred ninety-seven thousand, eight hundred sixty-one".