6636020 has 12 divisors (see below), whose sum is σ = 13935684. Its totient is φ = 2654400.

The previous prime is 6636017. The next prime is 6636023. The reversal of 6636020 is 206366.

It is an interprime number because it is at equal distance from previous prime (6636017) and next prime (6636023).

It can be written as a sum of positive squares in 2 ways, for example, as 5262436 + 1373584 = 2294^2 + 1172^2 .

It is a super-2 number, since 2×6636020² = 88073522880800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6636023) 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 3 ways as a sum of consecutive naturals, for example, 165881 + ... + 165920.

It is an arithmetic number, because the mean of its divisors is an integer number (1161307).

Almost surely, 2^6636020 is an apocalyptic number.

It is an amenable number.

6636020 is an abundant number, since it is smaller than the sum of its proper divisors (7299664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6636020 is a wasteful number, since it uses less digits than its factorization.

6636020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331810 (or 331808 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 6636020 is about 2576.0473598131. The cubic root of 6636020 is about 187.9183665501.

The spelling of 6636020 in words is "six million, six hundred thirty-six thousand, twenty".