6156961 has 6 divisors (see below), whose sum is σ = 6377462. Its totient is φ = 5943840.

The previous prime is 6156959. The next prime is 6156967. The reversal of 6156961 is 1696516.

It can be written as a sum of positive squares in 3 ways, for example, as 6561 + 6150400 = 81^2 + 2480^2 .

It is not a de Polignac number, because 6156961 - 2¹ = 6156959 is a prime.

It is a Duffinian number.

6156961 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6156967) 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 5 ways as a sum of consecutive naturals, for example, 2820 + ... + 4501.

Almost surely, 2^6156961 is an apocalyptic number.

It is an amenable number.

6156961 is a deficient number, since it is larger than the sum of its proper divisors (220501).

6156961 is an equidigital number, since it uses as much as digits as its factorization.

6156961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7379 (or 7350 counting only the distinct ones).

The product of its digits is 9720, while the sum is 34.

The square root of 6156961 is about 2481.3224296733. The cubic root of 6156961 is about 183.2829786409.

It can be divided in two parts, 6156 and 961, that added together give a palindrome (7117).

The spelling of 6156961 in words is "six million, one hundred fifty-six thousand, nine hundred sixty-one".