6161140 has 24 divisors (see below), whose sum is σ = 13700232. Its totient is φ = 2319360.

The previous prime is 6161117. The next prime is 6161143. The reversal of 6161140 is 411616.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 898704 + 5262436 = 948^2 + 2294^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6161143) 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 7 ways as a sum of consecutive naturals, for example, 8721 + ... + 9400.

It is an arithmetic number, because the mean of its divisors is an integer number (570843).

Almost surely, 2^6161140 is an apocalyptic number.

It is an amenable number.

6161140 is an abundant number, since it is smaller than the sum of its proper divisors (7539092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6161140 is a wasteful number, since it uses less digits than its factorization.

6161140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18147 (or 18145 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 6161140 is about 2482.1643781184. The cubic root of 6161140 is about 183.3244366665.

Adding to 6161140 its reverse (411616), we get a palindrome (6572756).

The spelling of 6161140 in words is "six million, one hundred sixty-one thousand, one hundred forty".