105666513 has 8 divisors (see below), whose sum is σ = 140976576. Its totient is φ = 70400400.

The previous prime is 105666499. The next prime is 105666521. The reversal of 105666513 is 315666501.

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

It is a de Polignac number, because none of the positive numbers 2^k-105666513 is a prime.

It is a super-2 number, since 2×105666513² = 22330823939158338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105666563) 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, 4893 + ... + 15338.

It is an arithmetic number, because the mean of its divisors is an integer number (17622072).

Almost surely, 2^105666513 is an apocalyptic number.

It is an amenable number.

105666513 is a deficient number, since it is larger than the sum of its proper divisors (35310063).

105666513 is a wasteful number, since it uses less digits than its factorization.

105666513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21975.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 105666513 is about 10279.4218222622. The cubic root of 105666513 is about 472.7655169021.

The spelling of 105666513 in words is "one hundred five million, six hundred sixty-six thousand, five hundred thirteen".