659448340 has 24 divisors (see below), whose sum is σ = 1388965032. Its totient is φ = 262993920.

The previous prime is 659448331. The next prime is 659448353. The reversal of 659448340 is 43844956.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 42224004 + 617224336 = 6498^2 + 24844^2 .

It is a super-2 number, since 2×659448340² = 869744226257511200, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 42181 + ... + 55660.

It is an arithmetic number, because the mean of its divisors is an integer number (57873543).

Almost surely, 2^659448340 is an apocalyptic number.

It is an amenable number.

659448340 is an abundant number, since it is smaller than the sum of its proper divisors (729516692).

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

659448340 is a wasteful number, since it uses less digits than its factorization.

659448340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98187 (or 98185 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 659448340 is about 25679.7262446468. The cubic root of 659448340 is about 870.4161218950.

The spelling of 659448340 in words is "six hundred fifty-nine million, four hundred forty-eight thousand, three hundred forty".