260813866 has 8 divisors (see below), whose sum is σ = 397851840. Its totient is φ = 128196588.

The previous prime is 260813863. The next prime is 260813867. The reversal of 260813866 is 668318062.

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

It is not an unprimeable number, because it can be changed into a prime (260813863) 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, 1105026 + ... + 1105261.

It is an arithmetic number, because the mean of its divisors is an integer number (49731480).

Almost surely, 2^260813866 is an apocalyptic number.

260813866 is a deficient number, since it is larger than the sum of its proper divisors (137037974).

260813866 is a wasteful number, since it uses less digits than its factorization.

260813866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210348.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 260813866 is about 16149.7326912863. The cubic root of 260813866 is about 638.9156981695.

The spelling of 260813866 in words is "two hundred sixty million, eight hundred thirteen thousand, eight hundred sixty-six".