260555247 has 18 divisors (see below), whose sum is σ = 393439592. Its totient is φ = 166148136.

The previous prime is 260555233. The next prime is 260555333. The reversal of 260555247 is 742555062.

260555247 is a `hidden beast` number, since 2 + 60 + 5 + 552 + 47 = 666.

It is not a de Polignac number, because 260555247 - 2¹⁹ = 260030959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260555947) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22603 + ... + 32124.

Almost surely, 2^260555247 is an apocalyptic number.

260555247 is a deficient number, since it is larger than the sum of its proper divisors (132884345).

260555247 is a wasteful number, since it uses less digits than its factorization.

260555247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54779 (or 54753 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 260555247 is about 16141.7237927057. The cubic root of 260555247 is about 638.7044486852.

The spelling of 260555247 in words is "two hundred sixty million, five hundred fifty-five thousand, two hundred forty-seven".