261166937 has 8 divisors (see below), whose sum is σ = 276671232. Its totient is φ = 245678400.

The previous prime is 261166931. The next prime is 261166949. The reversal of 261166937 is 739661162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261166937 - 2¹² = 261162841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261166894 and 261166903.

It is not an unprimeable number, because it can be changed into a prime (261166931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59612 + ... + 63842.

It is an arithmetic number, because the mean of its divisors is an integer number (34583904).

Almost surely, 2^261166937 is an apocalyptic number.

It is an amenable number.

261166937 is a deficient number, since it is larger than the sum of its proper divisors (15504295).

261166937 is a wasteful number, since it uses less digits than its factorization.

261166937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7879.

The product of its digits is 81648, while the sum is 41.

The square root of 261166937 is about 16160.6601659709. The cubic root of 261166937 is about 639.2038741677.

The spelling of 261166937 in words is "two hundred sixty-one million, one hundred sixty-six thousand, nine hundred thirty-seven".