261488470 has 16 divisors (see below), whose sum is σ = 470879568. Its totient is φ = 104550880.

The previous prime is 261488467. The next prime is 261488473. The reversal of 261488470 is 74884162.

It is an interprime number because it is at equal distance from previous prime (261488467) and next prime (261488473).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261488473) 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, 29832 + ... + 37588.

It is an arithmetic number, because the mean of its divisors is an integer number (29429973).

Almost surely, 2^261488470 is an apocalyptic number.

261488470 is a deficient number, since it is larger than the sum of its proper divisors (209391098).

261488470 is a wasteful number, since it uses less digits than its factorization.

261488470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11135.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 261488470 is about 16170.6051216397. The cubic root of 261488470 is about 639.4660830265.

The spelling of 261488470 in words is "two hundred sixty-one million, four hundred eighty-eight thousand, four hundred seventy".