6721563250 has 32 divisors (see below), whose sum is σ = 12642499584. Its totient is φ = 2675862000.

The previous prime is 6721563229. The next prime is 6721563271. The reversal of 6721563250 is 523651276.

It is an interprime number because it is at equal distance from previous prime (6721563229) and next prime (6721563271).

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, 10962 + ... + 116461.

It is an arithmetic number, because the mean of its divisors is an integer number (395078112).

Almost surely, 2^6721563250 is an apocalyptic number.

6721563250 is a deficient number, since it is larger than the sum of its proper divisors (5920936334).

6721563250 is a wasteful number, since it uses less digits than its factorization.

6721563250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127651 (or 127641 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 6721563250 is about 81985.1404219082. The cubic root of 6721563250 is about 1887.2239088592.

The spelling of 6721563250 in words is "six billion, seven hundred twenty-one million, five hundred sixty-three thousand, two hundred fifty".