245990 has 16 divisors (see below), whose sum is σ = 469152. Its totient is φ = 92544.

The previous prime is 245989. The next prime is 246011. The reversal of 245990 is 99542.

245990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×245990² = 121022160200, which contains 22 as substring.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554 + ... + 893.

It is an arithmetic number, because the mean of its divisors is an integer number (29322).

2²⁴⁵⁹⁹⁰ is an apocalyptic number.

245990 is a deficient number, since it is larger than the sum of its proper divisors (223162).

245990 is a wasteful number, since it uses less digits than its factorization.

245990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 245990 is about 495.9737896301. The cubic root of 245990 is about 62.6574165211.

The spelling of 245990 in words is "two hundred forty-five thousand, nine hundred ninety".