245066 has 4 divisors (see below), whose sum is σ = 367602. Its totient is φ = 122532.

The previous prime is 245039. The next prime is 245071. The reversal of 245066 is 660542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660542 = 2 ⋅330271.

It can be written as a sum of positive squares in only one way, i.e., 229441 + 15625 = 479^2 + 125^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61265 + ... + 61268.

2²⁴⁵⁰⁶⁶ is an apocalyptic number.

245066 is a deficient number, since it is larger than the sum of its proper divisors (122536).

245066 is a wasteful number, since it uses less digits than its factorization.

245066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122535.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 245066 is about 495.0414124091. The cubic root of 245066 is about 62.5788657745.

The spelling of 245066 in words is "two hundred forty-five thousand, sixty-six".