722135 has 4 divisors (see below), whose sum is σ = 866568. Its totient is φ = 577704.

The previous prime is 722123. The next prime is 722147. The reversal of 722135 is 531227.

722135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531227 = 167 ⋅3181.

It is an interprime number because it is at equal distance from previous prime (722123) and next prime (722147).

It is a cyclic number.

It is not a de Polignac number, because 722135 - 2⁴ = 722119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722135.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72209 + ... + 72218.

It is an arithmetic number, because the mean of its divisors is an integer number (216642).

2⁷²²¹³⁵ is an apocalyptic number.

722135 is a deficient number, since it is larger than the sum of its proper divisors (144433).

722135 is a wasteful number, since it uses less digits than its factorization.

722135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144432.

The product of its digits is 420, while the sum is 20.

The square root of 722135 is about 849.7852669940. The cubic root of 722135 is about 89.7165982425.

The spelling of 722135 in words is "seven hundred twenty-two thousand, one hundred thirty-five".