722515 has 8 divisors (see below), whose sum is σ = 877968. Its totient is φ = 570720.

The previous prime is 722509. The next prime is 722521. The reversal of 722515 is 515227.

It is an interprime number because it is at equal distance from previous prime (722509) and next prime (722521).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 722515 - 2¹⁷ = 591443 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456 + ... + 1285.

It is an arithmetic number, because the mean of its divisors is an integer number (109746).

2⁷²²⁵¹⁵ is an apocalyptic number.

722515 is a deficient number, since it is larger than the sum of its proper divisors (155453).

722515 is a wasteful number, since it uses less digits than its factorization.

722515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829.

The product of its digits is 700, while the sum is 22.

The square root of 722515 is about 850.0088234836. The cubic root of 722515 is about 89.7323322945.

It can be divided in two parts, 7 and 22515, that added together give a palindrome (22522).

The spelling of 722515 in words is "seven hundred twenty-two thousand, five hundred fifteen".