245205566 has 8 divisors (see below), whose sum is σ = 367951224. Its totient is φ = 122555160.

The previous prime is 245205563. The next prime is 245205589. The reversal of 245205566 is 665502542.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245205563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16985 + ... + 27908.

It is an arithmetic number, because the mean of its divisors is an integer number (45993903).

Almost surely, 2^245205566 is an apocalyptic number.

245205566 is a deficient number, since it is larger than the sum of its proper divisors (122745658).

245205566 is a wasteful number, since it uses less digits than its factorization.

245205566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47626.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 245205566 is about 15659.0410306634. The cubic root of 245205566 is about 625.9074315246.

The spelling of 245205566 in words is "two hundred forty-five million, two hundred five thousand, five hundred sixty-six".