245690223 has 4 divisors (see below), whose sum is σ = 327586968. Its totient is φ = 163793480.

The previous prime is 245690213. The next prime is 245690267. The reversal of 245690223 is 322096542.

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

It is a cyclic number.

It is not a de Polignac number, because 245690223 - 2⁵ = 245690191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245690213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40948368 + ... + 40948373.

It is an arithmetic number, because the mean of its divisors is an integer number (81896742).

Almost surely, 2^245690223 is an apocalyptic number.

245690223 is a deficient number, since it is larger than the sum of its proper divisors (81896745).

245690223 is an equidigital number, since it uses as much as digits as its factorization.

245690223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81896744.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 245690223 is about 15674.5087004346. The cubic root of 245690223 is about 626.3195357866.

The spelling of 245690223 in words is "two hundred forty-five million, six hundred ninety thousand, two hundred twenty-three".