659711243 has 4 divisors (see below), whose sum is σ = 659804208. Its totient is φ = 659618280.

The previous prime is 659711237. The next prime is 659711251. The reversal of 659711243 is 342117956.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-659711243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 659711197 and 659711206.

It is not an unprimeable number, because it can be changed into a prime (659711543) 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, 34871 + ... + 50352.

It is an arithmetic number, because the mean of its divisors is an integer number (164951052).

Almost surely, 2^659711243 is an apocalyptic number.

659711243 is a deficient number, since it is larger than the sum of its proper divisors (92965).

659711243 is an equidigital number, since it uses as much as digits as its factorization.

659711243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92964.

The product of its digits is 45360, while the sum is 38.

The square root of 659711243 is about 25684.8446170110. The cubic root of 659711243 is about 870.5317764468.

The spelling of 659711243 in words is "six hundred fifty-nine million, seven hundred eleven thousand, two hundred forty-three".