6191961 has 16 divisors (see below), whose sum is σ = 8792064. Its totient is φ = 3862784.

The previous prime is 6191959. The next prime is 6192023. The reversal of 6191961 is 1691916.

It is a cyclic number.

It is not a de Polignac number, because 6191961 - 2¹ = 6191959 is a prime.

6191961 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6191951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15976 + ... + 16358.

It is an arithmetic number, because the mean of its divisors is an integer number (549504).

Almost surely, 2^6191961 is an apocalyptic number.

It is an amenable number.

6191961 is a deficient number, since it is larger than the sum of its proper divisors (2600103).

6191961 is a wasteful number, since it uses less digits than its factorization.

6191961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720.

The product of its digits is 2916, while the sum is 33.

The square root of 6191961 is about 2488.3651259411. The cubic root of 6191961 is about 183.6296208160.

The spelling of 6191961 in words is "six million, one hundred ninety-one thousand, nine hundred sixty-one".