105616639 has 2 divisors, whose sum is σ = 105616640. Its totient is φ = 105616638.

The previous prime is 105616633. The next prime is 105616703. The reversal of 105616639 is 936616501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105616639 - 2²¹ = 103519487 is a prime.

It is a super-2 number, since 2×105616639² = 22309748867312642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105616598 and 105616607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105616633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52808319 + 52808320.

It is an arithmetic number, because the mean of its divisors is an integer number (52808320).

Almost surely, 2^105616639 is an apocalyptic number.

105616639 is a deficient number, since it is larger than the sum of its proper divisors (1).

105616639 is an equidigital number, since it uses as much as digits as its factorization.

105616639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 105616639 is about 10276.9956212893. The cubic root of 105616639 is about 472.6911243080.

The spelling of 105616639 in words is "one hundred five million, six hundred sixteen thousand, six hundred thirty-nine".