722166455 has 8 divisors (see below), whose sum is σ = 875534352. Its totient is φ = 571776768.

The previous prime is 722166437. The next prime is 722166457. The reversal of 722166455 is 554661227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 722166455 - 2⁶ = 722166391 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 (722166457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 744017 + ... + 744986.

It is an arithmetic number, because the mean of its divisors is an integer number (109441794).

Almost surely, 2^722166455 is an apocalyptic number.

722166455 is a deficient number, since it is larger than the sum of its proper divisors (153367897).

722166455 is a wasteful number, since it uses less digits than its factorization.

722166455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489105.

The product of its digits is 100800, while the sum is 38.

The square root of 722166455 is about 26873.1549134075. The cubic root of 722166455 is about 897.1790085883.

The spelling of 722166455 in words is "seven hundred twenty-two million, one hundred sixty-six thousand, four hundred fifty-five".