245263616 has 54 divisors (see below), whose sum is σ = 530218710. Its totient is φ = 113178624.

The previous prime is 245263597. The next prime is 245263633. The reversal of 245263616 is 616362542.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4393216 + 240870400 = 2096^2 + 15520^2 .

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 40430 + ... + 46098.

It is an arithmetic number, because the mean of its divisors is an integer number (9818865).

Almost surely, 2^245263616 is an apocalyptic number.

245263616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245263616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265109355).

245263616 is an abundant number, since it is smaller than the sum of its proper divisors (284955094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245263616 is an equidigital number, since it uses as much as digits as its factorization.

245263616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5711 (or 5684 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 245263616 is about 15660.8944827554. The cubic root of 245263616 is about 625.9568200983.

The spelling of 245263616 in words is "two hundred forty-five million, two hundred sixty-three thousand, six hundred sixteen".