261768162 has 16 divisors (see below), whose sum is σ = 524672640. Its totient is φ = 87066672.

The previous prime is 261768161. The next prime is 261768163. The reversal of 261768162 is 261867162.

It is an interprime number because it is at equal distance from previous prime (261768161) and next prime (261768163).

It is a self number, because there is not a number n which added to its sum of digits gives 261768162.

It is not an unprimeable number, because it can be changed into a prime (261768161) 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, 44337 + ... + 49892.

It is an arithmetic number, because the mean of its divisors is an integer number (32792040).

Almost surely, 2^261768162 is an apocalyptic number.

261768162 is an abundant number, since it is smaller than the sum of its proper divisors (262904478).

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

261768162 is a wasteful number, since it uses less digits than its factorization.

261768162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94697.

The product of its digits is 48384, while the sum is 39.

The square root of 261768162 is about 16179.2509715376. The cubic root of 261768162 is about 639.6939959658.

The spelling of 261768162 in words is "two hundred sixty-one million, seven hundred sixty-eight thousand, one hundred sixty-two".