659543040 has 352 divisors, whose sum is σ = 2531074560. Its totient is φ = 161906688.

The previous prime is 659543039. The next prime is 659543051. The reversal of 659543040 is 40345956.

It is a happy number.

It is a super-2 number, since 2×659543040² = 869994043224883200, which contains 22 as substring.

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 = 659542986 and 659543004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1796937 + ... + 1797303.

Almost surely, 2^659543040 is an apocalyptic number.

659543040 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 659543040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1265537280).

659543040 is an abundant number, since it is smaller than the sum of its proper divisors (1871531520).

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

659543040 is a wasteful number, since it uses less digits than its factorization.

659543040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 659543040 is about 25681.5700454626. The cubic root of 659543040 is about 870.4577852351.

Adding to 659543040 its reverse (40345956), we get a palindrome (699888996).

The spelling of 659543040 in words is "six hundred fifty-nine million, five hundred forty-three thousand, forty".