105511663 has 4 divisors (see below), whose sum is σ = 107756640. Its totient is φ = 103266688.

The previous prime is 105511661. The next prime is 105511697. The reversal of 105511663 is 366115501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105511663 - 2¹ = 105511661 is a prime.

It is a super-2 number, since 2×105511663² = 22265422058051138, 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 (105511661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122418 + ... + 1122511.

It is an arithmetic number, because the mean of its divisors is an integer number (26939160).

Almost surely, 2^105511663 is an apocalyptic number.

105511663 is a deficient number, since it is larger than the sum of its proper divisors (2244977).

105511663 is an equidigital number, since it uses as much as digits as its factorization.

105511663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244976.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 105511663 is about 10271.8870223538. The cubic root of 105511663 is about 472.5344644196.

The spelling of 105511663 in words is "one hundred five million, five hundred eleven thousand, six hundred sixty-three".