245603631 has 24 divisors (see below), whose sum is σ = 410242224. Its totient is φ = 129548160.

The previous prime is 245603621. The next prime is 245603681. The reversal of 245603631 is 136306542.

It is not a de Polignac number, because 245603631 - 2⁹ = 245603119 is a prime.

It is a super-2 number, since 2×245603631² = 120642287120768322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245603621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62350 + ... + 66171.

It is an arithmetic number, because the mean of its divisors is an integer number (17093426).

Almost surely, 2^245603631 is an apocalyptic number.

245603631 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

245603631 is a deficient number, since it is larger than the sum of its proper divisors (164638593).

245603631 is a wasteful number, since it uses less digits than its factorization.

245603631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128551 (or 128544 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 245603631 is about 15671.7462651742. The cubic root of 245603631 is about 626.2459463246.

The spelling of 245603631 in words is "two hundred forty-five million, six hundred three thousand, six hundred thirty-one".