861324533 has 8 divisors (see below), whose sum is σ = 920063448. Its totient is φ = 803482624.

The previous prime is 861324521. The next prime is 861324593. The reversal of 861324533 is 335423168.

It can be written as a sum of positive squares in 4 ways, for example, as 11135569 + 850188964 = 3337^2 + 29158^2 .

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 861324533 - 2²⁰ = 860275957 is a prime.

It is a super-2 number, since 2×861324533² = 1483759902295336178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 861324493 and 861324502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861324593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222266 + ... + 226107.

It is an arithmetic number, because the mean of its divisors is an integer number (115007931).

Almost surely, 2^861324533 is an apocalyptic number.

It is an amenable number.

861324533 is a deficient number, since it is larger than the sum of its proper divisors (58738915).

861324533 is a wasteful number, since it uses less digits than its factorization.

861324533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448503.

The product of its digits is 51840, while the sum is 35.

The square root of 861324533 is about 29348.3310087644. The cubic root of 861324533 is about 951.4565037529.

The spelling of 861324533 in words is "eight hundred sixty-one million, three hundred twenty-four thousand, five hundred thirty-three".