261112968 has 24 divisors (see below), whose sum is σ = 707181150. Its totient is φ = 87037632.

The previous prime is 261112967. The next prime is 261112987. The reversal of 261112968 is 869211162.

It can be written as a sum of positive squares in only one way, i.e., 221950404 + 39162564 = 14898^2 + 6258^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (261112961) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1813213 + ... + 1813356.

Almost surely, 2^261112968 is an apocalyptic number.

It is an amenable number.

261112968 is an abundant number, since it is smaller than the sum of its proper divisors (446068182).

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

261112968 is a wasteful number, since it uses less digits than its factorization.

261112968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626581 (or 3626574 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 261112968 is about 16158.9903149918. The cubic root of 261112968 is about 639.1598415771.

The spelling of 261112968 in words is "two hundred sixty-one million, one hundred twelve thousand, nine hundred sixty-eight".