245069 has 4 divisors (see below), whose sum is σ = 267360. Its totient is φ = 222780.

The previous prime is 245039. The next prime is 245071. The reversal of 245069 is 960542.

245069 = T₁₀₅ + T₁₀₆ + ... + T₁₃₇.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245069 - 2⁸ = 244813 is a prime.

It is a super-2 number, since 2×245069² = 120117629522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245029) 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, 11129 + ... + 11150.

It is an arithmetic number, because the mean of its divisors is an integer number (66840).

2²⁴⁵⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

245069 is a deficient number, since it is larger than the sum of its proper divisors (22291).

245069 is a wasteful number, since it uses less digits than its factorization.

245069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22290.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 245069 is about 495.0444424494. The cubic root of 245069 is about 62.5791211286.

The spelling of 245069 in words is "two hundred forty-five thousand, sixty-nine".