6636461 has 12 divisors (see below), whose sum is σ = 7273152. Its totient is φ = 6052176.

The previous prime is 6636457. The next prime is 6636467. The reversal of 6636461 is 1646366.

It is not a de Polignac number, because 6636461 - 2² = 6636457 is a prime.

It is a super-2 number, since 2×6636461² = 88085229209042, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6636467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17900 + ... + 18266.

It is an arithmetic number, because the mean of its divisors is an integer number (606096).

Almost surely, 2^6636461 is an apocalyptic number.

It is an amenable number.

6636461 is a deficient number, since it is larger than the sum of its proper divisors (636691).

6636461 is a wasteful number, since it uses less digits than its factorization.

6636461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 487 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 6636461 is about 2576.1329546435. The cubic root of 6636461 is about 187.9225291939.

The spelling of 6636461 in words is "six million, six hundred thirty-six thousand, four hundred sixty-one".