746721 has 12 divisors (see below), whose sum is σ = 1116180. Its totient is φ = 480480.

The previous prime is 746677. The next prime is 746723. The reversal of 746721 is 127647.

746721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 404496 + 342225 = 636^2 + 585^2 .

It is not a de Polignac number, because 746721 - 2⁹ = 746209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (746723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1170 + ... + 1691.

It is an arithmetic number, because the mean of its divisors is an integer number (93015).

2⁷⁴⁶⁷²¹ is an apocalyptic number.

It is an amenable number.

746721 is a deficient number, since it is larger than the sum of its proper divisors (369459).

746721 is a wasteful number, since it uses less digits than its factorization.

746721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896 (or 2893 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 746721 is about 864.1301985233. The cubic root of 746721 is about 90.7234286891.

The spelling of 746721 in words is "seven hundred forty-six thousand, seven hundred twenty-one".