659747 has 8 divisors (see below), whose sum is σ = 739632. Its totient is φ = 583200.

The previous prime is 659741. The next prime is 659759. The reversal of 659747 is 747956.

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 659747 - 2¹² = 655651 is a prime.

It is a super-2 number, since 2×659747² = 870532208018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 659747.

It is not an unprimeable number, because it can be changed into a prime (659741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404 + ... + 1217.

It is an arithmetic number, because the mean of its divisors is an integer number (92454).

2⁶⁵⁹⁷⁴⁷ is an apocalyptic number.

659747 is a deficient number, since it is larger than the sum of its proper divisors (79885).

659747 is a wasteful number, since it uses less digits than its factorization.

659747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669.

The product of its digits is 52920, while the sum is 38.

The square root of 659747 is about 812.2481148024. The cubic root of 659747 is about 87.0547504056.

Subtracting 659747 from its reverse (747956), we obtain a square (88209 = 297²).

The spelling of 659747 in words is "six hundred fifty-nine thousand, seven hundred forty-seven".