861623094 has 8 divisors (see below), whose sum is σ = 1723246200. Its totient is φ = 287207696.

The previous prime is 861623069. The next prime is 861623099. The reversal of 861623094 is 490326168.

It is a sphenic number, since it is the product of 3 distinct primes.

861623094 is an admirable number.

It is a super-2 number, since 2×861623094² = 1484788712228265672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861623099) 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 3 ways as a sum of consecutive naturals, for example, 71801919 + ... + 71801930.

It is an arithmetic number, because the mean of its divisors is an integer number (215405775).

Almost surely, 2^861623094 is an apocalyptic number.

861623094 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

861623094 is a wasteful number, since it uses less digits than its factorization.

861623094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143603854.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 861623094 is about 29353.4170753594. The cubic root of 861623094 is about 951.5664255376.

The spelling of 861623094 in words is "eight hundred sixty-one million, six hundred twenty-three thousand, ninety-four".