722085 has 48 divisors (see below), whose sum is σ = 1486464. Its totient is φ = 291456.

The previous prime is 722077. The next prime is 722093. The reversal of 722085 is 580227.

It is an interprime number because it is at equal distance from previous prime (722077) and next prime (722093).

It is not a de Polignac number, because 722085 - 2³ = 722077 is a prime.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

722085 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31384 + ... + 31406.

It is an arithmetic number, because the mean of its divisors is an integer number (30968).

2⁷²²⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

722085 is an abundant number, since it is smaller than the sum of its proper divisors (764379).

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

722085 is a wasteful number, since it uses less digits than its factorization.

722085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 722085 is about 849.7558472879. The cubic root of 722085 is about 89.7145275616.

The spelling of 722085 in words is "seven hundred twenty-two thousand, eighty-five".