722635 has 8 divisors (see below), whose sum is σ = 875520. Its totient is φ = 572544.

The previous prime is 722633. The next prime is 722639. The reversal of 722635 is 536227.

722635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 722635 - 2¹ = 722633 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (722633) 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, 75 + ... + 1204.

It is an arithmetic number, because the mean of its divisors is an integer number (109440).

2⁷²²⁶³⁵ is an apocalyptic number.

722635 is a deficient number, since it is larger than the sum of its proper divisors (152885).

722635 is a wasteful number, since it uses less digits than its factorization.

722635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397.

The product of its digits is 2520, while the sum is 25.

The square root of 722635 is about 850.0794080555. The cubic root of 722635 is about 89.7372997964.

The spelling of 722635 in words is "seven hundred twenty-two thousand, six hundred thirty-five".