724105 has 8 divisors (see below), whose sum is σ = 878472. Its totient is φ = 572928.

The previous prime is 724099. The next prime is 724111. The reversal of 724105 is 501427.

It is an interprime number because it is at equal distance from previous prime (724099) and next prime (724111).

It can be written as a sum of positive squares in 4 ways, for example, as 170569 + 553536 = 413^2 + 744^2 .

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 724105 - 2⁷ = 723977 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, 262 + ... + 1231.

It is an arithmetic number, because the mean of its divisors is an integer number (109809).

2⁷²⁴¹⁰⁵ is an apocalyptic number.

It is an amenable number.

724105 is a deficient number, since it is larger than the sum of its proper divisors (154367).

724105 is a wasteful number, since it uses less digits than its factorization.

724105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 724105 is about 850.9435939003. The cubic root of 724105 is about 89.7981071123.

The spelling of 724105 in words is "seven hundred twenty-four thousand, one hundred five".