105106987 has 8 divisors (see below), whose sum is σ = 111315456. Its totient is φ = 99035112.

The previous prime is 105106979. The next prime is 105106997. The reversal of 105106987 is 789601501.

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

It is not a de Polignac number, because 105106987 - 2³ = 105106979 is a prime.

It is a super-2 number, since 2×105106987² = 22094957432436338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105106927) 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, 32563 + ... + 35644.

It is an arithmetic number, because the mean of its divisors is an integer number (13914432).

Almost surely, 2^105106987 is an apocalyptic number.

105106987 is a deficient number, since it is larger than the sum of its proper divisors (6208469).

105106987 is an equidigital number, since it uses as much as digits as its factorization.

105106987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68297.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 105106987 is about 10252.1698678865. The cubic root of 105106987 is about 471.9295759983.

The spelling of 105106987 in words is "one hundred five million, one hundred six thousand, nine hundred eighty-seven".