659490804 has 54 divisors (see below), whose sum is σ = 1939222194. Its totient is φ = 188425440.

The previous prime is 659490803. The next prime is 659490829. The reversal of 659490804 is 408094956.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 622402704 + 37088100 = 24948^2 + 6090^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 659490804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659490803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 185167 + ... + 188694.

Almost surely, 2^659490804 is an apocalyptic number.

It is an amenable number.

659490804 is an abundant number, since it is smaller than the sum of its proper divisors (1279731390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

659490804 is a wasteful number, since it uses less digits than its factorization.

659490804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373885 (or 373873 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 659490804 is about 25680.5530314283. The cubic root of 659490804 is about 870.4348044587.

The spelling of 659490804 in words is "six hundred fifty-nine million, four hundred ninety thousand, eight hundred four".