105489605 has 8 divisors (see below), whose sum is σ = 136325112. Its totient is φ = 77899968.

The previous prime is 105489583. The next prime is 105489611. The reversal of 105489605 is 506984501.

It can be written as a sum of positive squares in 4 ways, for example, as 611524 + 104878081 = 782^2 + 10241^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 105489605 - 2⁶ = 105489541 is a prime.

It is a super-2 number, since 2×105489605² = 22256113526112050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811394 + ... + 811523.

It is an arithmetic number, because the mean of its divisors is an integer number (17040639).

Almost surely, 2^105489605 is an apocalyptic number.

It is an amenable number.

105489605 is a deficient number, since it is larger than the sum of its proper divisors (30835507).

105489605 is a wasteful number, since it uses less digits than its factorization.

105489605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622935.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 105489605 is about 10270.8132589391. The cubic root of 105489605 is about 472.5015331735.

The spelling of 105489605 in words is "one hundred five million, four hundred eighty-nine thousand, six hundred five".