659731141 has 4 divisors (see below), whose sum is σ = 661175212. Its totient is φ = 658287072.

The previous prime is 659731139. The next prime is 659731147. The reversal of 659731141 is 141137956.

It is a happy number.

659731141 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 can be written as a sum of positive squares in 2 ways, for example, as 217680516 + 442050625 = 14754^2 + 21025^2 .

It is a cyclic number.

It is not a de Polignac number, because 659731141 - 2¹ = 659731139 is a prime.

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 659731141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659731147) 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, 721350 + ... + 722263.

It is an arithmetic number, because the mean of its divisors is an integer number (165293803).

Almost surely, 2^659731141 is an apocalyptic number.

It is an amenable number.

659731141 is a deficient number, since it is larger than the sum of its proper divisors (1444071).

659731141 is a wasteful number, since it uses less digits than its factorization.

659731141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444070.

The product of its digits is 22680, while the sum is 37.

The square root of 659731141 is about 25685.2319631340. The cubic root of 659731141 is about 870.5405285927.

The spelling of 659731141 in words is "six hundred fifty-nine million, seven hundred thirty-one thousand, one hundred forty-one".