6637361 has 4 divisors (see below), whose sum is σ = 7027812. Its totient is φ = 6246912.

The previous prime is 6637357. The next prime is 6637369. The reversal of 6637361 is 1637366.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1637366 = 2 ⋅818683.

It can be written as a sum of positive squares in 2 ways, for example, as 5973136 + 664225 = 2444^2 + 815^2 .

It is a cyclic number.

It is not a de Polignac number, because 6637361 - 2² = 6637357 is a prime.

It is a super-2 number, since 2×6637361² = 88109122088642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6637369) 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, 195200 + ... + 195233.

It is an arithmetic number, because the mean of its divisors is an integer number (1756953).

Almost surely, 2^6637361 is an apocalyptic number.

It is an amenable number.

6637361 is a deficient number, since it is larger than the sum of its proper divisors (390451).

6637361 is a wasteful number, since it uses less digits than its factorization.

6637361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390450.

The product of its digits is 13608, while the sum is 32.

The square root of 6637361 is about 2576.3076291468. The cubic root of 6637361 is about 187.9310238134.

The spelling of 6637361 in words is "six million, six hundred thirty-seven thousand, three hundred sixty-one".