105677981 has 4 divisors (see below), whose sum is σ = 111240000. Its totient is φ = 100115964.

The previous prime is 105677941. The next prime is 105677983. The reversal of 105677981 is 189776501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105677981 - 2⁶ = 105677917 is a prime.

It is a super-2 number, since 2×105677981² = 22335671336472722, 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 (105677983) 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, 2780981 + ... + 2781018.

It is an arithmetic number, because the mean of its divisors is an integer number (27810000).

Almost surely, 2^105677981 is an apocalyptic number.

It is an amenable number.

105677981 is a deficient number, since it is larger than the sum of its proper divisors (5562019).

105677981 is an equidigital number, since it uses as much as digits as its factorization.

105677981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562018.

The product of its (nonzero) digits is 105840, while the sum is 44.

The square root of 105677981 is about 10279.9796206024. The cubic root of 105677981 is about 472.7826193838.

The spelling of 105677981 in words is "one hundred five million, six hundred seventy-seven thousand, nine hundred eighty-one".