861147223 has 8 divisors (see below), whose sum is σ = 912062592. Its totient is φ = 810260736.

The previous prime is 861147193. The next prime is 861147269. The reversal of 861147223 is 322741168.

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 861147223 - 2⁹ = 861146711 is a prime.

It is a super-2 number, since 2×861147223² = 1483149079361223458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861147293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98611 + ... + 106987.

It is an arithmetic number, because the mean of its divisors is an integer number (114007824).

Almost surely, 2^861147223 is an apocalyptic number.

861147223 is a deficient number, since it is larger than the sum of its proper divisors (50915369).

861147223 is a wasteful number, since it uses less digits than its factorization.

861147223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14441.

The product of its digits is 16128, while the sum is 34.

The square root of 861147223 is about 29345.3100682204. The cubic root of 861147223 is about 951.3912111624.

The spelling of 861147223 in words is "eight hundred sixty-one million, one hundred forty-seven thousand, two hundred twenty-three".