245307666 has 8 divisors (see below), whose sum is σ = 490615344. Its totient is φ = 81769220.

The previous prime is 245307649. The next prime is 245307677. The reversal of 245307666 is 666703542.

245307666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

245307666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20442300 + ... + 20442311.

It is an arithmetic number, because the mean of its divisors is an integer number (61326918).

Almost surely, 2^245307666 is an apocalyptic number.

245307666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

245307666 is a wasteful number, since it uses less digits than its factorization.

245307666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40884616.

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 245307666 is about 15662.3007888369. The cubic root of 245307666 is about 625.9942923602.

The spelling of 245307666 in words is "two hundred forty-five million, three hundred seven thousand, six hundred sixty-six".