105656861 has 8 divisors (see below), whose sum is σ = 107184000. Its totient is φ = 104140080.

The previous prime is 105656851. The next prime is 105656899. The reversal of 105656861 is 168656501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105656861 is a prime.

It is a super-2 number, since 2×105656861² = 22326744552746642, 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 (105656821) 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, 19256 + ... + 24126.

It is an arithmetic number, because the mean of its divisors is an integer number (13398000).

Almost surely, 2^105656861 is an apocalyptic number.

It is an amenable number.

105656861 is a deficient number, since it is larger than the sum of its proper divisors (1527139).

105656861 is a wasteful number, since it uses less digits than its factorization.

105656861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 105656861 is about 10278.9523298827. The cubic root of 105656861 is about 472.7511217023.

It can be divided in two parts, 105656 and 861, that multiplied together give a triangular number (90969816 = T₁₃₄₈₈).

The spelling of 105656861 in words is "one hundred five million, six hundred fifty-six thousand, eight hundred sixty-one".