261796994 has 32 divisors (see below), whose sum is σ = 422115840. Its totient is φ = 121492800.

The previous prime is 261796993. The next prime is 261797009. The reversal of 261796994 is 499697162.

261796994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (261796993) 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, 221084 + ... + 222264.

It is an arithmetic number, because the mean of its divisors is an integer number (13191120).

Almost surely, 2^261796994 is an apocalyptic number.

261796994 is a deficient number, since it is larger than the sum of its proper divisors (160318846).

261796994 is a wasteful number, since it uses less digits than its factorization.

261796994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346.

The product of its digits is 1469664, while the sum is 53.

The square root of 261796994 is about 16180.1419647666. The cubic root of 261796994 is about 639.7174810987.

The spelling of 261796994 in words is "two hundred sixty-one million, seven hundred ninety-six thousand, nine hundred ninety-four".