260278663 has 8 divisors (see below), whose sum is σ = 276404400. Its totient is φ = 244395648.

The previous prime is 260278661. The next prime is 260278679. The reversal of 260278663 is 366872062.

260278663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 260278663 - 2¹ = 260278661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260278661) 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, 58468 + ... + 62761.

It is an arithmetic number, because the mean of its divisors is an integer number (34550550).

Almost surely, 2^260278663 is an apocalyptic number.

260278663 is a deficient number, since it is larger than the sum of its proper divisors (16125737).

260278663 is a wasteful number, since it uses less digits than its factorization.

260278663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121361.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 260278663 is about 16133.1541553411. The cubic root of 260278663 is about 638.4783699837.

The spelling of 260278663 in words is "two hundred sixty million, two hundred seventy-eight thousand, six hundred sixty-three".