722154 has 16 divisors (see below), whose sum is σ = 1507392. Its totient is φ = 230208.

The previous prime is 722153. The next prime is 722159. The reversal of 722154 is 451227.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 722154.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722154.

It is not an unprimeable number, because it can be changed into a prime (722153) 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, 2479 + ... + 2754.

It is an arithmetic number, because the mean of its divisors is an integer number (94212).

2⁷²²¹⁵⁴ is an apocalyptic number.

722154 is an abundant number, since it is smaller than the sum of its proper divisors (785238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722154 is a wasteful number, since it uses less digits than its factorization.

722154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5261.

The product of its digits is 560, while the sum is 21.

The square root of 722154 is about 849.7964462152. The cubic root of 722154 is about 89.7173850761.

The spelling of 722154 in words is "seven hundred twenty-two thousand, one hundred fifty-four".