6806906 has 4 divisors (see below), whose sum is σ = 10210362. Its totient is φ = 3403452.

The previous prime is 6806903. The next prime is 6806923. The reversal of 6806906 is 6096086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6096086 = 2 ⋅3048043.

It can be written as a sum of positive squares in only one way, i.e., 6806881 + 25 = 2609^2 + 5^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6806903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701725 + ... + 1701728.

Almost surely, 2^6806906 is an apocalyptic number.

6806906 is a deficient number, since it is larger than the sum of its proper divisors (3403456).

6806906 is a wasteful number, since it uses less digits than its factorization.

6806906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403455.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 6806906 is about 2609.0047911033. The cubic root of 6806906 is about 189.5177613694.

The spelling of 6806906 in words is "six million, eight hundred six thousand, nine hundred six".