6637161 has 4 divisors (see below), whose sum is σ = 8849552. Its totient is φ = 4424772.

The previous prime is 6637159. The next prime is 6637177. The reversal of 6637161 is 1617366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6637161 - 2¹ = 6637159 is a prime.

It is a super-2 number, since 2×6637161² = 88103812279842, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6637181) 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, 1106191 + ... + 1106196.

It is an arithmetic number, because the mean of its divisors is an integer number (2212388).

Almost surely, 2^6637161 is an apocalyptic number.

It is an amenable number.

6637161 is a deficient number, since it is larger than the sum of its proper divisors (2212391).

6637161 is a wasteful number, since it uses less digits than its factorization.

6637161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212390.

The product of its digits is 4536, while the sum is 30.

The square root of 6637161 is about 2576.2688136140. The cubic root of 6637161 is about 187.9291361865.

The spelling of 6637161 in words is "six million, six hundred thirty-seven thousand, one hundred sixty-one".