860721760 has 48 divisors (see below), whose sum is σ = 2035345536. Its totient is φ = 343968768.

The previous prime is 860721739. The next prime is 860721761. The reversal of 860721760 is 67127068.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860721761) 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 7 ways as a sum of consecutive naturals, for example, 249004 + ... + 252436.

It is an arithmetic number, because the mean of its divisors is an integer number (42403032).

Almost surely, 2^860721760 is an apocalyptic number.

860721760 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

860721760 is an abundant number, since it is smaller than the sum of its proper divisors (1174623776).

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

860721760 is a wasteful number, since it uses less digits than its factorization.

860721760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015 (or 5007 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 860721760 is about 29338.0599222239. The cubic root of 860721760 is about 951.2345022090.

The spelling of 860721760 in words is "eight hundred sixty million, seven hundred twenty-one thousand, seven hundred sixty".