105330861 has 20 divisors (see below), whose sum is σ = 166603932. Its totient is φ = 66089088.

The previous prime is 105330857. The next prime is 105330887. The reversal of 105330861 is 168033501.

It can be written as a sum of positive squares in 2 ways, for example, as 45562500 + 59768361 = 6750^2 + 7731^2 .

It is not a de Polignac number, because 105330861 - 2² = 105330857 is a prime.

It is a super-2 number, since 2×105330861² = 22189180558002642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105330811) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36870 + ... + 39623.

Almost surely, 2^105330861 is an apocalyptic number.

It is an amenable number.

105330861 is a deficient number, since it is larger than the sum of its proper divisors (61273071).

105330861 is an equidigital number, since it uses as much as digits as its factorization.

105330861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76522 (or 76513 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 105330861 is about 10263.0824317064. The cubic root of 105330861 is about 472.2644025764.

The spelling of 105330861 in words is "one hundred five million, three hundred thirty thousand, eight hundred sixty-one".