6636494 has 16 divisors (see below), whose sum is σ = 10767168. Its totient is φ = 3055872.

The previous prime is 6636493. The next prime is 6636523. The reversal of 6636494 is 4946366.

It is a happy number.

It is a super-2 number, since 2×6636494² = 88086105224072, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6636493) 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, 479 + ... + 3674.

It is an arithmetic number, because the mean of its divisors is an integer number (672948).

Almost surely, 2^6636494 is an apocalyptic number.

6636494 is a deficient number, since it is larger than the sum of its proper divisors (4130674).

6636494 is a wasteful number, since it uses less digits than its factorization.

6636494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219.

The product of its digits is 93312, while the sum is 38.

The square root of 6636494 is about 2576.1393595844. The cubic root of 6636494 is about 187.9228406769.

The spelling of 6636494 in words is "six million, six hundred thirty-six thousand, four hundred ninety-four".