721065467 has 2 divisors, whose sum is σ = 721065468. Its totient is φ = 721065466.

The previous prime is 721065439. The next prime is 721065497. The reversal of 721065467 is 764560127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 721065467 - 2¹² = 721061371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 721065467.

It is not a weakly prime, because it can be changed into another prime (721065497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360532733 + 360532734.

It is an arithmetic number, because the mean of its divisors is an integer number (360532734).

Almost surely, 2^721065467 is an apocalyptic number.

721065467 is a deficient number, since it is larger than the sum of its proper divisors (1).

721065467 is an equidigital number, since it uses as much as digits as its factorization.

721065467 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 721065467 is about 26852.6621957675. The cubic root of 721065467 is about 896.7228414908.

The spelling of 721065467 in words is "seven hundred twenty-one million, sixty-five thousand, four hundred sixty-seven".