721068 has 12 divisors (see below), whose sum is σ = 1682520. Its totient is φ = 240352.

The previous prime is 721057. The next prime is 721079. The reversal of 721068 is 860127.

It is an interprime number because it is at equal distance from previous prime (721057) and next prime (721079).

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 721068.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30033 + ... + 30056.

It is an arithmetic number, because the mean of its divisors is an integer number (140210).

2⁷²¹⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

721068 is an abundant number, since it is smaller than the sum of its proper divisors (961452).

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

721068 is a wasteful number, since it uses less digits than its factorization.

721068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60096 (or 60094 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 721068 is about 849.1572292573. The cubic root of 721068 is about 89.6723891509.

The spelling of 721068 in words is "seven hundred twenty-one thousand, sixty-eight".