805724135 has 16 divisors (see below), whose sum is σ = 974049600. Its totient is φ = 639809280.

The previous prime is 805724107. The next prime is 805724137. The reversal of 805724135 is 531427508.

It is a happy number.

It is not a de Polignac number, because 805724135 - 2¹⁰ = 805723111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 805724095 and 805724104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805724137) 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, 609275 + ... + 610595.

It is an arithmetic number, because the mean of its divisors is an integer number (60878100).

Almost surely, 2^805724135 is an apocalyptic number.

805724135 is a deficient number, since it is larger than the sum of its proper divisors (168325465).

805724135 is a wasteful number, since it uses less digits than its factorization.

805724135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 805724135 is about 28385.2802522716. The cubic root of 805724135 is about 930.5265969764.

The spelling of 805724135 in words is "eight hundred five million, seven hundred twenty-four thousand, one hundred thirty-five".