245770 has 16 divisors (see below), whose sum is σ = 505728. Its totient is φ = 84240.

The previous prime is 245759. The next prime is 245771. The reversal of 245770 is 77542.

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (245771) by changing a digit.

245770 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1686 + ... + 1825.

It is an arithmetic number, because the mean of its divisors is an integer number (31608).

2²⁴⁵⁷⁷⁰ is an apocalyptic number.

245770 is an abundant number, since it is smaller than the sum of its proper divisors (259958).

It is a weird number, because it is abundant, but not a pseudoperfect number.

245770 is a wasteful number, since it uses less digits than its factorization.

245770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 245770 is about 495.7519541061. The cubic root of 245770 is about 62.6387318278.

The spelling of 245770 in words is "two hundred forty-five thousand, seven hundred seventy".