5638698464 has 96 divisors (see below), whose sum is σ = 12916995840. Its totient is φ = 2373193728.

The previous prime is 5638698463. The next prime is 5638698497. The reversal of 5638698464 is 4648968365.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638698463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3019259 + ... + 3021125.

It is an arithmetic number, because the mean of its divisors is an integer number (134552040).

Almost surely, 2^5638698464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5638698464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6458497920).

5638698464 is an abundant number, since it is smaller than the sum of its proper divisors (7278297376).

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

5638698464 is a wasteful number, since it uses less digits than its factorization.

5638698464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120 (or 2112 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 59.

The square root of 5638698464 is about 75091.2675615481. The cubic root of 5638698464 is about 1779.8891552404.

The spelling of 5638698464 in words is "five billion, six hundred thirty-eight million, six hundred ninety-eight thousand, four hundred sixty-four".