6721081470 has 96 divisors (see below), whose sum is σ = 19028973600. Its totient is φ = 1639395072.

The previous prime is 6721081469. The next prime is 6721081481. The reversal of 6721081470 is 741801276.

It is a super-2 number, since 2×6721081470² = 90345872252754721800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18177 + ... + 117356.

It is an arithmetic number, because the mean of its divisors is an integer number (198218475).

Almost surely, 2^6721081470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6721081470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9514486800).

6721081470 is an abundant number, since it is smaller than the sum of its proper divisors (12307892130).

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

6721081470 is a wasteful number, since it uses less digits than its factorization.

6721081470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135594 (or 135591 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 6721081470 is about 81982.2021538822. The cubic root of 6721081470 is about 1887.1788177385.

The spelling of 6721081470 in words is "six billion, seven hundred twenty-one million, eighty-one thousand, four hundred seventy".