105260639 has 8 divisors (see below), whose sum is σ = 115495632. Its totient is φ = 95136640.

The previous prime is 105260621. The next prime is 105260641. The reversal of 105260639 is 936062501.

It is a happy number.

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-105260639 is a prime.

It is a super-2 number, since 2×105260639² = 22159604245376642, 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 (105260699) 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, 25754 + ... + 29559.

It is an arithmetic number, because the mean of its divisors is an integer number (14436954).

Almost surely, 2^105260639 is an apocalyptic number.

105260639 is a deficient number, since it is larger than the sum of its proper divisors (10234993).

105260639 is a wasteful number, since it uses less digits than its factorization.

105260639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55497.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 105260639 is about 10259.6607643723. The cubic root of 105260639 is about 472.1594294689.

The spelling of 105260639 in words is "one hundred five million, two hundred sixty thousand, six hundred thirty-nine".