105650621 has 6 divisors (see below), whose sum is σ = 111504222. Its totient is φ = 100089720.

The previous prime is 105650609. The next prime is 105650639. The reversal of 105650621 is 126056501.

It can be written as a sum of positive squares in only one way, i.e., 92064025 + 13586596 = 9595^2 + 3686^2 .

It is not a de Polignac number, because 105650621 - 2¹⁰ = 105649597 is a prime.

It is a super-2 number, since 2×105650621² = 22324107435371282, 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 (105650641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145970 + ... + 146691.

It is an arithmetic number, because the mean of its divisors is an integer number (18584037).

Almost surely, 2^105650621 is an apocalyptic number.

It is an amenable number.

105650621 is a deficient number, since it is larger than the sum of its proper divisors (5853601).

105650621 is an equidigital number, since it uses as much as digits as its factorization.

105650621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292699 (or 292680 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 105650621 is about 10278.6487925213. The cubic root of 105650621 is about 472.7418147658.

The spelling of 105650621 in words is "one hundred five million, six hundred fifty thousand, six hundred twenty-one".