659426040 has 192 divisors, whose sum is σ = 2637835200. Its totient is φ = 139124736.

The previous prime is 659425999. The next prime is 659426057. The reversal of 659426040 is 40624956.

659426040 is a `hidden beast` number, since 6 + 5 + 9 + 42 + 604 + 0 = 666.

659426040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 659425986 and 659426004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22696 + ... + 42824.

It is an arithmetic number, because the mean of its divisors is an integer number (13738725).

Almost surely, 2^659426040 is an apocalyptic number.

659426040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659426040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1318917600).

659426040 is an abundant number, since it is smaller than the sum of its proper divisors (1978409160).

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

659426040 is a wasteful number, since it uses less digits than its factorization.

659426040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20166 (or 20159 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 659426040 is about 25679.2920463162. The cubic root of 659426040 is about 870.4063104121.

The spelling of 659426040 in words is "six hundred fifty-nine million, four hundred twenty-six thousand, forty".