6485861 has 4 divisors (see below), whose sum is σ = 6543372. Its totient is φ = 6428352.

The previous prime is 6485849. The next prime is 6485863. The reversal of 6485861 is 1685846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1685846 = 2 ⋅842923.

It can be written as a sum of positive squares in 2 ways, for example, as 185761 + 6300100 = 431^2 + 2510^2 .

It is a cyclic number.

It is not a de Polignac number, because 6485861 - 2²² = 2291557 is a prime.

It is a super-2 number, since 2×6485861² = 84132785822642, 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 (6485863) 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, 28586 + ... + 28811.

It is an arithmetic number, because the mean of its divisors is an integer number (1635843).

Almost surely, 2^6485861 is an apocalyptic number.

It is an amenable number.

6485861 is a deficient number, since it is larger than the sum of its proper divisors (57511).

6485861 is a wasteful number, since it uses less digits than its factorization.

6485861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57510.

The product of its digits is 46080, while the sum is 38.

The square root of 6485861 is about 2546.7353612027. The cubic root of 6485861 is about 186.4901417210.

The spelling of 6485861 in words is "six million, four hundred eighty-five thousand, eight hundred sixty-one".