721852 has 6 divisors (see below), whose sum is σ = 1263248. Its totient is φ = 360924.

The previous prime is 721849. The next prime is 721859. The reversal of 721852 is 258127.

721852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90228 + ... + 90235.

2⁷²¹⁸⁵² is an apocalyptic number.

It is an amenable number.

721852 is a deficient number, since it is larger than the sum of its proper divisors (541396).

721852 is a wasteful number, since it uses less digits than its factorization.

721852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180467 (or 180465 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 721852 is about 849.6187380231. The cubic root of 721852 is about 89.7048769278.

Adding to 721852 its reverse (258127), we get a palindrome (979979).

The spelling of 721852 in words is "seven hundred twenty-one thousand, eight hundred fifty-two".