721914060 has 288 divisors, whose sum is σ = 2475893952. Its totient is φ = 156549120.

The previous prime is 721914059. The next prime is 721914073. The reversal of 721914060 is 60419127.

It is a happy number.

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 (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6388564 + ... + 6388676.

It is an arithmetic number, because the mean of its divisors is an integer number (8596854).

Almost surely, 2^721914060 is an apocalyptic number.

721914060 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 721914060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1237946976).

721914060 is an abundant number, since it is smaller than the sum of its proper divisors (1753979892).

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

721914060 is a wasteful number, since it uses less digits than its factorization.

721914060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 721914060 is about 26868.4584596884. The cubic root of 721914060 is about 897.0744759560.

The spelling of 721914060 in words is "seven hundred twenty-one million, nine hundred fourteen thousand, sixty".