245624 has 8 divisors (see below), whose sum is σ = 460560. Its totient is φ = 122808.

The previous prime is 245621. The next prime is 245627. The reversal of 245624 is 426542.

It is an interprime number because it is at equal distance from previous prime (245621) and next prime (245627).

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×245624² = 120662298752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 245624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15344 + ... + 15359.

It is an arithmetic number, because the mean of its divisors is an integer number (57570).

2²⁴⁵⁶²⁴ is an apocalyptic number.

It is an amenable number.

245624 is a deficient number, since it is larger than the sum of its proper divisors (214936).

245624 is a wasteful number, since it uses less digits than its factorization.

245624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30709 (or 30705 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 245624 is about 495.6046811724. The cubic root of 245624 is about 62.6263258299.

The spelling of 245624 in words is "two hundred forty-five thousand, six hundred twenty-four".