6161661 has 24 divisors (see below), whose sum is σ = 9815520. Its totient is φ = 3693600.

The previous prime is 6161651. The next prime is 6161663. The reversal of 6161661 is 1661616.

It is not a de Polignac number, because 6161661 - 2⁵ = 6161629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6161663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10506 + ... + 11076.

It is an arithmetic number, because the mean of its divisors is an integer number (408980).

Almost surely, 2^6161661 is an apocalyptic number.

It is an amenable number.

6161661 is a deficient number, since it is larger than the sum of its proper divisors (3653859).

6161661 is a wasteful number, since it uses less digits than its factorization.

6161661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 694 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 6161661 is about 2482.2693246302. The cubic root of 6161661 is about 183.3296039645.

The spelling of 6161661 in words is "six million, one hundred sixty-one thousand, six hundred sixty-one".