865724493 has 16 divisors (see below), whose sum is σ = 1222341120. Its totient is φ = 543493296.

The previous prime is 865724479. The next prime is 865724549. The reversal of 865724493 is 394427568.

It is not a de Polignac number, because 865724493 - 2⁴ = 865724477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865729493) 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, 35955 + ... + 54992.

It is an arithmetic number, because the mean of its divisors is an integer number (76396320).

Almost surely, 2^865724493 is an apocalyptic number.

It is an amenable number.

865724493 is a deficient number, since it is larger than the sum of its proper divisors (356616627).

865724493 is a wasteful number, since it uses less digits than its factorization.

865724493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91136.

The product of its digits is 1451520, while the sum is 48.

The square root of 865724493 is about 29423.1965122758. The cubic root of 865724493 is about 953.0738818171.

The spelling of 865724493 in words is "eight hundred sixty-five million, seven hundred twenty-four thousand, four hundred ninety-three".