6721672490 has 192 divisors, whose sum is σ = 14514681600. Its totient is φ = 2232502272.

The previous prime is 6721672457. The next prime is 6721672499. The reversal of 6721672490 is 942761276.

It is not an unprimeable number, because it can be changed into a prime (6721672499) 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 95 ways as a sum of consecutive naturals, for example, 75524366 + ... + 75524454.

It is an arithmetic number, because the mean of its divisors is an integer number (75597300).

Almost surely, 2^6721672490 is an apocalyptic number.

6721672490 is an abundant number, since it is smaller than the sum of its proper divisors (7793009110).

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

6721672490 is a wasteful number, since it uses less digits than its factorization.

6721672490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 6721672490 is about 81985.8066374906. The cubic root of 6721672490 is about 1887.2341326328.

The spelling of 6721672490 in words is "six billion, seven hundred twenty-one million, six hundred seventy-two thousand, four hundred ninety".