6459861 has 8 divisors (see below), whose sum is σ = 8651680. Its totient is φ = 4287312.

The previous prime is 6459841. The next prime is 6459863. The reversal of 6459861 is 1689546.

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

It is not a de Polignac number, because 6459861 - 2⁶ = 6459797 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 (6459863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4015 + ... + 5388.

It is an arithmetic number, because the mean of its divisors is an integer number (1081460).

Almost surely, 2^6459861 is an apocalyptic number.

It is an amenable number.

6459861 is a deficient number, since it is larger than the sum of its proper divisors (2191819).

6459861 is a wasteful number, since it uses less digits than its factorization.

6459861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9635.

The product of its digits is 51840, while the sum is 39.

The square root of 6459861 is about 2541.6256608714. The cubic root of 6459861 is about 186.2406124121.

The spelling of 6459861 in words is "six million, four hundred fifty-nine thousand, eight hundred sixty-one".