6623898372 has 144 divisors (see below), whose sum is σ = 20642632192. Its totient is φ = 1744001280.

The previous prime is 6623898287. The next prime is 6623898373. The reversal of 6623898372 is 2738983266.

It is a happy number.

6623898372 is a `hidden beast` number, since 6 + 623 + 8 + 9 + 8 + 3 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (6623898373) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2478597 + ... + 2481267.

Almost surely, 2^6623898372 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 6623898372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10321316096).

6623898372 is an abundant number, since it is smaller than the sum of its proper divisors (14018733820).

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

6623898372 is a wasteful number, since it uses less digits than its factorization.

6623898372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458 (or 3453 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 6623898372 is about 81387.3354521451. The cubic root of 6623898372 is about 1878.0387699672.

It can be divided in two parts, 662389 and 8372, that added together give a square (670761 = 819²).

The spelling of 6623898372 in words is "six billion, six hundred twenty-three million, eight hundred ninety-eight thousand, three hundred seventy-two".