721483243 has 12 divisors (see below), whose sum is σ = 802868304. Its totient is φ = 644490000.

The previous prime is 721483201. The next prime is 721483249. The reversal of 721483243 is 342384127.

It is not a de Polignac number, because 721483243 - 2¹⁷ = 721352171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 721483199 and 721483208.

It is not an unprimeable number, because it can be changed into a prime (721483249) 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, 16383 + ... + 41368.

It is an arithmetic number, because the mean of its divisors is an integer number (66905692).

Almost surely, 2^721483243 is an apocalyptic number.

721483243 is a deficient number, since it is larger than the sum of its proper divisors (81385061).

721483243 is a wasteful number, since it uses less digits than its factorization.

721483243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57826 (or 57795 counting only the distinct ones).

The product of its digits is 32256, while the sum is 34.

The square root of 721483243 is about 26860.4401118076. The cubic root of 721483243 is about 896.8959912580.

The spelling of 721483243 in words is "seven hundred twenty-one million, four hundred eighty-three thousand, two hundred forty-three".