105386621 has 16 divisors (see below), whose sum is σ = 116899200. Its totient is φ = 94499328.

The previous prime is 105386581. The next prime is 105386623. The reversal of 105386621 is 126683501.

It is a happy number.

It is not a de Polignac number, because 105386621 - 2⁶ = 105386557 is a prime.

It is a super-2 number, since 2×105386621² = 22212679771595282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105386623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159590 + ... + 160248.

It is an arithmetic number, because the mean of its divisors is an integer number (7306200).

Almost surely, 2^105386621 is an apocalyptic number.

It is an amenable number.

105386621 is a deficient number, since it is larger than the sum of its proper divisors (11512579).

105386621 is a wasteful number, since it uses less digits than its factorization.

105386621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 105386621 is about 10265.7986050770. The cubic root of 105386621 is about 472.3477235753.

The spelling of 105386621 in words is "one hundred five million, three hundred eighty-six thousand, six hundred twenty-one".