6636145 has 8 divisors (see below), whose sum is σ = 7977960. Its totient is φ = 5299200.

The previous prime is 6636127. The next prime is 6636169. The reversal of 6636145 is 5416366.

It can be written as a sum of positive squares in 4 ways, for example, as 2934369 + 3701776 = 1713^2 + 1924^2 .

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

It is not a de Polignac number, because 6636145 - 2⁷ = 6636017 is a prime.

It is a super-2 number, since 2×6636145² = 88076840922050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3345 + ... + 4945.

It is an arithmetic number, because the mean of its divisors is an integer number (997245).

Almost surely, 2^6636145 is an apocalyptic number.

It is an amenable number.

6636145 is a deficient number, since it is larger than the sum of its proper divisors (1341815).

6636145 is a wasteful number, since it uses less digits than its factorization.

6636145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435.

The product of its digits is 12960, while the sum is 31.

The square root of 6636145 is about 2576.0716216751. The cubic root of 6636145 is about 187.9195464565.

The spelling of 6636145 in words is "six million, six hundred thirty-six thousand, one hundred forty-five".