660225750 has 32 divisors (see below), whose sum is σ = 1647925344. Its totient is φ = 176060000.

The previous prime is 660225739. The next prime is 660225751. The reversal of 660225750 is 57522066.

660225750 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×660225750³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660225751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439401 + ... + 440900.

It is an arithmetic number, because the mean of its divisors is an integer number (51497667).

Almost surely, 2^660225750 is an apocalyptic number.

660225750 is an abundant number, since it is smaller than the sum of its proper divisors (987699594).

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

660225750 is a wasteful number, since it uses less digits than its factorization.

660225750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880321 (or 880311 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 660225750 is about 25694.8584351033. The cubic root of 660225750 is about 870.7580260929.

The spelling of 660225750 in words is "six hundred sixty million, two hundred twenty-five thousand, seven hundred fifty".