16870705 has 8 divisors (see below), whose sum is σ = 20792232. Its totient is φ = 13131648.

The previous prime is 16870699. The next prime is 16870717. The reversal of 16870705 is 50707861.

It can be written as a sum of positive squares in 4 ways, for example, as 6739216 + 10131489 = 2596^2 + 3183^2 .

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 16870705 - 2⁵ = 16870673 is a prime.

It is a Duffinian 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, 45412 + ... + 45781.

It is an arithmetic number, because the mean of its divisors is an integer number (2599029).

Almost surely, 2^16870705 is an apocalyptic number.

It is an amenable number.

16870705 is a deficient number, since it is larger than the sum of its proper divisors (3921527).

16870705 is an equidigital number, since it uses as much as digits as its factorization.

16870705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91235.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 16870705 is about 4107.3963772687. The cubic root of 16870705 is about 256.4746291278.

The spelling of 16870705 in words is "sixteen million, eight hundred seventy thousand, seven hundred five".