260438566 has 8 divisors (see below), whose sum is σ = 392509944. Its totient is φ = 129601920.

The previous prime is 260438561. The next prime is 260438569. The reversal of 260438566 is 665834062.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260438561) 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, 308155 + ... + 308998.

It is an arithmetic number, because the mean of its divisors is an integer number (49063743).

Almost surely, 2^260438566 is an apocalyptic number.

260438566 is a deficient number, since it is larger than the sum of its proper divisors (132071378).

260438566 is a wasteful number, since it uses less digits than its factorization.

260438566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617366.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 260438566 is about 16138.1091209596. The cubic root of 260438566 is about 638.6090936030.

The spelling of 260438566 in words is "two hundred sixty million, four hundred thirty-eight thousand, five hundred sixty-six".