245690 has 16 divisors (see below), whose sum is σ = 449280. Its totient is φ = 96720.

The previous prime is 245683. The next prime is 245711. The reversal of 245690 is 96542.

245690 = T₃₆ + T₃₇ + ... + T₁₁₄.

It is a super-2 number, since 2×245690² = 120727152200, which contains 22 as substring.

It is a nialpdrome in base 12.

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, 635 + ... + 945.

It is an arithmetic number, because the mean of its divisors is an integer number (28080).

2²⁴⁵⁶⁹⁰ is an apocalyptic number.

245690 is a deficient number, since it is larger than the sum of its proper divisors (203590).

245690 is a wasteful number, since it uses less digits than its factorization.

245690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

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

The square root of 245690 is about 495.6712620276. The cubic root of 245690 is about 62.6319346294.

The spelling of 245690 in words is "two hundred forty-five thousand, six hundred ninety".