724895 has 8 divisors (see below), whose sum is σ = 878256. Its totient is φ = 574336.

The previous prime is 724879. The next prime is 724901. The reversal of 724895 is 598427.

It is a happy number.

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 724895 - 2⁴ = 724879 is a prime.

It is a super-2 number, since 2×724895² = 1050945522050, which contains 22 as substring.

It is a d-powerful number, because it can be written as 7⁶ + 2¹⁹ + 8 + 4⁶ + 9³ + 5⁷ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77 + ... + 1206.

It is an arithmetic number, because the mean of its divisors is an integer number (109782).

2⁷²⁴⁸⁹⁵ is an apocalyptic number.

724895 is a deficient number, since it is larger than the sum of its proper divisors (153361).

724895 is a wasteful number, since it uses less digits than its factorization.

724895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401.

The product of its digits is 20160, while the sum is 35.

The square root of 724895 is about 851.4076579407. The cubic root of 724895 is about 89.8307518814.

The spelling of 724895 in words is "seven hundred twenty-four thousand, eight hundred ninety-five".