245256663 has 4 divisors (see below), whose sum is σ = 327008888. Its totient is φ = 163504440.

The previous prime is 245256647. The next prime is 245256673. The reversal of 245256663 is 366652542.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 245256663 - 2⁴ = 245256647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245256673) 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 3 ways as a sum of consecutive naturals, for example, 40876108 + ... + 40876113.

It is an arithmetic number, because the mean of its divisors is an integer number (81752222).

Almost surely, 2^245256663 is an apocalyptic number.

245256663 is a deficient number, since it is larger than the sum of its proper divisors (81752225).

245256663 is an equidigital number, since it uses as much as digits as its factorization.

245256663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81752224.

The product of its digits is 259200, while the sum is 39.

The square root of 245256663 is about 15660.6724951389. The cubic root of 245256663 is about 625.9509049406.

The spelling of 245256663 in words is "two hundred forty-five million, two hundred fifty-six thousand, six hundred sixty-three".