722401457663 has 4 divisors (see below), whose sum is σ = 722403274848. Its totient is φ = 722399640480.

The previous prime is 722401457651. The next prime is 722401457693. The reversal of 722401457663 is 366754104227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 722401457663 - 2¹⁸ = 722401195519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722401457623) 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, 27431 + ... + 1202312.

It is an arithmetic number, because the mean of its divisors is an integer number (180600818712).

Almost surely, 2^722401457663 is an apocalyptic number.

722401457663 is a deficient number, since it is larger than the sum of its proper divisors (1817185).

722401457663 is a wasteful number, since it uses less digits than its factorization.

722401457663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817184.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 722401457663 in words is "seven hundred twenty-two billion, four hundred one million, four hundred fifty-seven thousand, six hundred sixty-three".