4990769568 has 72 divisors (see below), whose sum is σ = 14576113188. Its totient is φ = 1618624512.

The previous prime is 4990769557. The next prime is 4990769569. The reversal of 4990769568 is 8659670994.

It is a happy number.

4990769568 is a `hidden beast` number, since 4 + 9 + 9 + 0 + 7 + 69 + 568 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4977020304 + 13749264 = 70548^2 + 3708^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (4990769569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223521 + ... + 244832.

Almost surely, 2^4990769568 is an apocalyptic number.

4990769568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4990769568 is an abundant number, since it is smaller than the sum of its proper divisors (9585343620).

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

4990769568 is a wasteful number, since it uses less digits than its factorization.

4990769568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468406 (or 468395 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The square root of 4990769568 is about 70645.3789571547. The cubic root of 4990769568 is about 1708.9230440477.

The spelling of 4990769568 in words is "four billion, nine hundred ninety million, seven hundred sixty-nine thousand, five hundred sixty-eight".