721962 has 24 divisors (see below), whose sum is σ = 1647360. Its totient is φ = 227880.

The previous prime is 721961. The next prime is 721979. The reversal of 721962 is 269127.

It is not an unprimeable number, because it can be changed into a prime (721961) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 714 + ... + 1397.

It is an arithmetic number, because the mean of its divisors is an integer number (68640).

2⁷²¹⁹⁶² is an apocalyptic number.

721962 is an abundant number, since it is smaller than the sum of its proper divisors (925398).

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

721962 is a wasteful number, since it uses less digits than its factorization.

721962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138 (or 2135 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 721962 is about 849.6834704759. The cubic root of 721962 is about 89.7094332797.

The spelling of 721962 in words is "seven hundred twenty-one thousand, nine hundred sixty-two".