6215643632 has 80 divisors (see below), whose sum is σ = 13942036224. Its totient is φ = 2653056000.

The previous prime is 6215643613. The next prime is 6215643701. The reversal of 6215643632 is 2363465126.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1466957 + ... + 1471187.

Almost surely, 2^6215643632 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 6215643632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6971018112).

6215643632 is an abundant number, since it is smaller than the sum of its proper divisors (7726392592).

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

6215643632 is a wasteful number, since it uses less digits than its factorization.

6215643632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4758 (or 4752 counting only the distinct ones).

The product of its digits is 155520, while the sum is 38.

The square root of 6215643632 is about 78839.3533205340. The cubic root of 6215643632 is about 1838.6343474035.

The spelling of 6215643632 in words is "six billion, two hundred fifteen million, six hundred forty-three thousand, six hundred thirty-two".