721151760 has 320 divisors, whose sum is σ = 2692399104. Its totient is φ = 156211200.

The previous prime is 721151759. The next prime is 721151779. The reversal of 721151760 is 67151127.

721151760 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3176767 + ... + 3176993.

Almost surely, 2^721151760 is an apocalyptic number.

721151760 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 721151760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1346199552).

721151760 is an abundant number, since it is smaller than the sum of its proper divisors (1971247344).

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

721151760 is a wasteful number, since it uses less digits than its factorization.

721151760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 721151760 is about 26854.2689343799. The cubic root of 721151760 is about 896.7586116213.

The spelling of 721151760 in words is "seven hundred twenty-one million, one hundred fifty-one thousand, seven hundred sixty".