721464127 has 2 divisors, whose sum is σ = 721464128. Its totient is φ = 721464126.

The previous prime is 721464113. The next prime is 721464131.

It is a happy number.

721464127 is nontrivially palindromic in base 10.

721464127 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 721464127 - 2¹⁹ = 720939839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 721464092 and 721464101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (721467127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360732063 + 360732064.

It is an arithmetic number, because the mean of its divisors is an integer number (360732064).

Almost surely, 2^721464127 is an apocalyptic number.

721464127 is a deficient number, since it is larger than the sum of its proper divisors (1).

721464127 is an equidigital number, since it uses as much as digits as its factorization.

721464127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 34.

The square root of 721464127 is about 26860.0842701582. The cubic root of 721464127 is about 896.8880699767. Note that the first 3 decimals are identical.

The spelling of 721464127 in words is "seven hundred twenty-one million, four hundred sixty-four thousand, one hundred twenty-seven".