660286243 has 8 divisors (see below), whose sum is σ = 677887056. Its totient is φ = 642876000.

The previous prime is 660286229. The next prime is 660286259. The reversal of 660286243 is 342682066.

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 660286243 - 2²⁵ = 626731811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660286223) 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, 40608 + ... + 54493.

It is an arithmetic number, because the mean of its divisors is an integer number (84735882).

Almost surely, 2^660286243 is an apocalyptic number.

660286243 is a deficient number, since it is larger than the sum of its proper divisors (17600813).

660286243 is a wasteful number, since it uses less digits than its factorization.

660286243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95285.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 660286243 is about 25696.0355502556. The cubic root of 660286243 is about 870.7846196010.

It can be divided in two parts, 660 and 286243, that added together give a triangular number (286903 = T₇₅₇).

The spelling of 660286243 in words is "six hundred sixty million, two hundred eighty-six thousand, two hundred forty-three".