245575666 has 32 divisors (see below), whose sum is σ = 432165888. Its totient is φ = 102468240.

The previous prime is 245575661. The next prime is 245575753. The reversal of 245575666 is 666575542.

It is not an unprimeable number, because it can be changed into a prime (245575661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302401 + ... + 303211.

It is an arithmetic number, because the mean of its divisors is an integer number (13505184).

Almost surely, 2^245575666 is an apocalyptic number.

245575666 is a deficient number, since it is larger than the sum of its proper divisors (186590222).

245575666 is a wasteful number, since it uses less digits than its factorization.

245575666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366.

The product of its digits is 1512000, while the sum is 46.

The square root of 245575666 is about 15670.8540290566. The cubic root of 245575666 is about 626.2221768163. Note that the first 3 decimals are identical.

The spelling of 245575666 in words is "two hundred forty-five million, five hundred seventy-five thousand, six hundred sixty-six".