8063621436 has 96 divisors (see below), whose sum is σ = 20658613248. Its totient is φ = 2433081600.

The previous prime is 8063621431. The next prime is 8063621437. The reversal of 8063621436 is 6341263608.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 8063621394 and 8063621403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8063621431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1683501 + ... + 1688283.

It is an arithmetic number, because the mean of its divisors is an integer number (215193888).

Almost surely, 2^8063621436 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 8063621436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10329306624).

8063621436 is an abundant number, since it is smaller than the sum of its proper divisors (12594991812).

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

8063621436 is a wasteful number, since it uses less digits than its factorization.

8063621436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5011 (or 5009 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 8063621436 is about 89797.6694352365. The cubic root of 8063621436 is about 2005.2877936317.

The spelling of 8063621436 in words is "eight billion, sixty-three million, six hundred twenty-one thousand, four hundred thirty-six".