659491 has 12 divisors (see below), whose sum is σ = 787512. Its totient is φ = 550368.

The previous prime is 659473. The next prime is 659497. The reversal of 659491 is 194956.

It is not a de Polignac number, because 659491 - 2⁹ = 658979 is a prime.

It is a Duffinian number.

659491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (659497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1951 + ... + 2263.

It is an arithmetic number, because the mean of its divisors is an integer number (65626).

2⁶⁵⁹⁴⁹¹ is an apocalyptic number.

659491 is a deficient number, since it is larger than the sum of its proper divisors (128021).

659491 is a wasteful number, since it uses less digits than its factorization.

659491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 363 counting only the distinct ones).

The product of its digits is 9720, while the sum is 34.

The square root of 659491 is about 812.0905121968. The cubic root of 659491 is about 87.0434890690.

The spelling of 659491 in words is "six hundred fifty-nine thousand, four hundred ninety-one".