724341865 has 32 divisors (see below), whose sum is σ = 1000079136. Its totient is φ = 498892800.

The previous prime is 724341853. The next prime is 724341881. The reversal of 724341865 is 568143427.

It can be written as a sum of positive squares in 16 ways, for example, as 172843609 + 551498256 = 13147^2 + 23484^2 .

It is not a de Polignac number, because 724341865 - 2¹⁵ = 724309097 is a prime.

It is a super-2 number, since 2×724341865² = 1049342274783356450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121965 + ... + 127765.

It is an arithmetic number, because the mean of its divisors is an integer number (31252473).

Almost surely, 2^724341865 is an apocalyptic number.

It is an amenable number.

724341865 is a deficient number, since it is larger than the sum of its proper divisors (275737271).

724341865 is a wasteful number, since it uses less digits than its factorization.

724341865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5949.

The product of its digits is 161280, while the sum is 40.

The square root of 724341865 is about 26913.6000007431. The cubic root of 724341865 is about 898.0789745575.

The spelling of 724341865 in words is "seven hundred twenty-four million, three hundred forty-one thousand, eight hundred sixty-five".