722015 has 16 divisors (see below), whose sum is σ = 1012800. Its totient is φ = 493920.

The previous prime is 722011. The next prime is 722023. The reversal of 722015 is 510227.

722015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 722015 - 2² = 722011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 721984 and 722002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1505 + ... + 1925.

It is an arithmetic number, because the mean of its divisors is an integer number (63300).

2⁷²²⁰¹⁵ is an apocalyptic number.

722015 is a deficient number, since it is larger than the sum of its proper divisors (290785).

722015 is an equidigital number, since it uses as much as digits as its factorization.

722015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 722015 is about 849.7146579882. The cubic root of 722015 is about 89.7116284477.

It can be divided in two parts, 7 and 22015, that added together give a palindrome (22022).

The spelling of 722015 in words is "seven hundred twenty-two thousand, fifteen".