721483 has 4 divisors (see below), whose sum is σ = 824560. Its totient is φ = 618408.

The previous prime is 721481. The next prime is 721499. The reversal of 721483 is 384127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 384127 = 281 ⋅1367.

It is not a de Polignac number, because 721483 - 2¹ = 721481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (721481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51528 + ... + 51541.

It is an arithmetic number, because the mean of its divisors is an integer number (206140).

2⁷²¹⁴⁸³ is an apocalyptic number.

721483 is a deficient number, since it is larger than the sum of its proper divisors (103077).

721483 is a wasteful number, since it uses less digits than its factorization.

721483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103076.

The product of its digits is 1344, while the sum is 25.

The square root of 721483 is about 849.4015540367. The cubic root of 721483 is about 89.6895890565.

The spelling of 721483 in words is "seven hundred twenty-one thousand, four hundred eighty-three".