659694240 has 192 divisors, whose sum is σ = 2339366400. Its totient is φ = 173601792.

The previous prime is 659694239. The next prime is 659694263. The reversal of 659694240 is 42496956.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 340314 + ... + 342246.

It is an arithmetic number, because the mean of its divisors is an integer number (12184200).

Almost surely, 2^659694240 is an apocalyptic number.

659694240 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 659694240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169683200).

659694240 is an abundant number, since it is smaller than the sum of its proper divisors (1679672160).

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

659694240 is a wasteful number, since it uses less digits than its factorization.

659694240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036 (or 2022 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 659694240 is about 25684.5136220252. The cubic root of 659694240 is about 870.5242975287.

The spelling of 659694240 in words is "six hundred fifty-nine million, six hundred ninety-four thousand, two hundred forty".