6890705 has 4 divisors (see below), whose sum is σ = 8268852. Its totient is φ = 5512560.

The previous prime is 6890701. The next prime is 6890713. The reversal of 6890705 is 5070986.

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 2298256 + 4592449 = 1516^2 + 2143^2 .

It is not a de Polignac number, because 6890705 - 2² = 6890701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6890701) 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, 689066 + ... + 689075.

It is an arithmetic number, because the mean of its divisors is an integer number (2067213).

Almost surely, 2^6890705 is an apocalyptic number.

It is an amenable number.

6890705 is a deficient number, since it is larger than the sum of its proper divisors (1378147).

6890705 is a wasteful number, since it uses less digits than its factorization.

6890705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378146.

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

The square root of 6890705 is about 2625.0152380510. The cubic root of 6890705 is about 190.2923016996.

The spelling of 6890705 in words is "six million, eight hundred ninety thousand, seven hundred five".