8690705 has 4 divisors (see below), whose sum is σ = 10428852. Its totient is φ = 6952560.

The previous prime is 8690683. The next prime is 8690713. The reversal of 8690705 is 5070968.

It is a Cunningham number, because it is equal to 2948²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3125824 + 5564881 = 1768^2 + 2359^2 .

It is not a de Polignac number, because 8690705 - 2¹⁴ = 8674321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869066 + ... + 869075.

It is an arithmetic number, because the mean of its divisors is an integer number (2607213).

Almost surely, 2^8690705 is an apocalyptic number.

It is an amenable number.

8690705 is a deficient number, since it is larger than the sum of its proper divisors (1738147).

8690705 is a wasteful number, since it uses less digits than its factorization.

8690705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738146.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 8690705 is about 2948.0001696065. Note that the first 3 decimals coincide. The cubic root of 8690705 is about 205.5977398476.

The spelling of 8690705 in words is "eight million, six hundred ninety thousand, seven hundred five".