721484047 has 2 divisors, whose sum is σ = 721484048. Its totient is φ = 721484046.

The previous prime is 721484041. The next prime is 721484081. The reversal of 721484047 is 740484127.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-721484047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 721483997 and 721484015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (721484041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360742023 + 360742024.

It is an arithmetic number, because the mean of its divisors is an integer number (360742024).

Almost surely, 2^721484047 is an apocalyptic number.

721484047 is a deficient number, since it is larger than the sum of its proper divisors (1).

721484047 is an equidigital number, since it uses as much as digits as its factorization.

721484047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50176, while the sum is 37.

The square root of 721484047 is about 26860.4550780511. The cubic root of 721484047 is about 896.8963244162.

The spelling of 721484047 in words is "seven hundred twenty-one million, four hundred eighty-four thousand, forty-seven".