6662251872 has 36 divisors (see below), whose sum is σ = 18945779580. Its totient is φ = 2220750528.

The previous prime is 6662251837. The next prime is 6662251877. The reversal of 6662251872 is 2781522666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6662251877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11566122 + ... + 11566697.

It is an arithmetic number, because the mean of its divisors is an integer number (526271655).

Almost surely, 2^6662251872 is an apocalyptic number.

It is an amenable number.

6662251872 is an abundant number, since it is smaller than the sum of its proper divisors (12283527708).

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

6662251872 is a wasteful number, since it uses less digits than its factorization.

6662251872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23132835 (or 23132824 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 6662251872 is about 81622.6186298871. The cubic root of 6662251872 is about 1881.6565179383.

The spelling of 6662251872 in words is "six billion, six hundred sixty-two million, two hundred fifty-one thousand, eight hundred seventy-two".