659427091 has 4 divisors (see below), whose sum is σ = 694133800. Its totient is φ = 624720384.

The previous prime is 659427079. The next prime is 659427101. The reversal of 659427091 is 190724956.

It is a happy number.

659427091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 659427091 - 2¹⁷ = 659296019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659427191) 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, 17353326 + ... + 17353363.

It is an arithmetic number, because the mean of its divisors is an integer number (173533450).

Almost surely, 2^659427091 is an apocalyptic number.

659427091 is a deficient number, since it is larger than the sum of its proper divisors (34706709).

659427091 is a wasteful number, since it uses less digits than its factorization.

659427091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34706708.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 659427091 is about 25679.3125102679. The cubic root of 659427091 is about 870.4067728327.

The spelling of 659427091 in words is "six hundred fifty-nine million, four hundred twenty-seven thousand, ninety-one".