536581861 has 8 divisors (see below), whose sum is σ = 544909248. Its totient is φ = 528276000.

The previous prime is 536581849. The next prime is 536581873. The reversal of 536581861 is 168185635.

It is an interprime number because it is at equal distance from previous prime (536581849) and next prime (536581873).

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 536581861 - 2¹⁵ = 536549093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (536581841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49066 + ... + 58996.

It is an arithmetic number, because the mean of its divisors is an integer number (68113656).

Almost surely, 2^536581861 is an apocalyptic number.

It is an amenable number.

536581861 is a deficient number, since it is larger than the sum of its proper divisors (8327387).

536581861 is an equidigital number, since it uses as much as digits as its factorization.

536581861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10763.

The product of its digits is 172800, while the sum is 43.

The square root of 536581861 is about 23164.2366807111. The cubic root of 536581861 is about 812.6034511589.

The spelling of 536581861 in words is "five hundred thirty-six million, five hundred eighty-one thousand, eight hundred sixty-one".