722463189 has 16 divisors (see below), whose sum is σ = 1148762112. Its totient is φ = 394886448.

The previous prime is 722463187. The next prime is 722463191. The reversal of 722463189 is 981364227.

It is an interprime number because it is at equal distance from previous prime (722463187) and next prime (722463191).

It is not a de Polignac number, because 722463189 - 2¹ = 722463187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722463189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722463187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747409 + ... + 748374.

It is an arithmetic number, because the mean of its divisors is an integer number (71797632).

Almost surely, 2^722463189 is an apocalyptic number.

It is an amenable number.

722463189 is a deficient number, since it is larger than the sum of its proper divisors (426298923).

722463189 is a wasteful number, since it uses less digits than its factorization.

722463189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495816.

The product of its digits is 145152, while the sum is 42.

The square root of 722463189 is about 26878.6753579859. The cubic root of 722463189 is about 897.3018736421.

The spelling of 722463189 in words is "seven hundred twenty-two million, four hundred sixty-three thousand, one hundred eighty-nine".