261872704 has 28 divisors (see below), whose sum is σ = 522579600. Its totient is φ = 130199168.

The previous prime is 261872701. The next prime is 261872707. The reversal of 261872704 is 407278162.

It is an interprime number because it is at equal distance from previous prime (261872701) and next prime (261872707).

It is not an unprimeable number, because it can be changed into a prime (261872701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27 + ... + 22885.

Almost surely, 2^261872704 is an apocalyptic number.

It is an amenable number.

261872704 is a deficient number, since it is larger than the sum of its proper divisors (260706896).

261872704 is a wasteful number, since it uses less digits than its factorization.

261872704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23050 (or 23040 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 261872704 is about 16182.4813919250. The cubic root of 261872704 is about 639.7791425431.

The spelling of 261872704 in words is "two hundred sixty-one million, eight hundred seventy-two thousand, seven hundred four".