2635645768 has 32 divisors (see below), whose sum is σ = 5659660800. Its totient is φ = 1127192832.

The previous prime is 2635645759. The next prime is 2635645829. The reversal of 2635645768 is 8675465362.

It is a super-2 number, since 2×2635645768² = 13893257228752619648, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 22305 + ... + 75952.

It is an arithmetic number, because the mean of its divisors is an integer number (176864400).

Almost surely, 2^2635645768 is an apocalyptic number.

2635645768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2635645768 is an abundant number, since it is smaller than the sum of its proper divisors (3024015032).

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

2635645768 is a wasteful number, since it uses less digits than its factorization.

2635645768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98749 (or 98745 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 52.

The square root of 2635645768 is about 51338.5407661729. The cubic root of 2635645768 is about 1381.3243898484.

The spelling of 2635645768 in words is "two billion, six hundred thirty-five million, six hundred forty-five thousand, seven hundred sixty-eight".