245998 has 8 divisors (see below), whose sum is σ = 376992. Its totient is φ = 120336.

The previous prime is 245989. The next prime is 246011. The reversal of 245998 is 899542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1215 + ... + 1402.

It is an arithmetic number, because the mean of its divisors is an integer number (47124).

2²⁴⁵⁹⁹⁸ is an apocalyptic number.

245998 is a deficient number, since it is larger than the sum of its proper divisors (130994).

245998 is a wasteful number, since it uses less digits than its factorization.

245998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666.

The product of its digits is 25920, while the sum is 37.

The square root of 245998 is about 495.9818545068. The cubic root of 245998 is about 62.6580957545.

The spelling of 245998 in words is "two hundred forty-five thousand, nine hundred ninety-eight".