6601161 has 32 divisors (see below), whose sum is σ = 10690560. Its totient is φ = 3541824.

The previous prime is 6601159. The next prime is 6601163. The reversal of 6601161 is 1611066.

6601161 is a nontrivial binomial coefficient, being equal to C(3634, 2).

It is an interprime number because it is at equal distance from previous prime (6601159) and next prime (6601163).

It is not a de Polignac number, because 6601161 - 2¹ = 6601159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (6601163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38071 + ... + 38243.

It is an arithmetic number, because the mean of its divisors is an integer number (334080).

Almost surely, 2^6601161 is an apocalyptic number.

6601161 is the 3633-rd triangular number and also the 1817-th hexagonal number.

It is an amenable number.

6601161 is a deficient number, since it is larger than the sum of its proper divisors (4089399).

6601161 is a wasteful number, since it uses less digits than its factorization.

6601161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 6601161 is about 2569.2724651154. The cubic root of 6601161 is about 187.5887437687.

The spelling of 6601161 in words is "six million, six hundred one thousand, one hundred sixty-one".