6890899 has 4 divisors (see below), whose sum is σ = 7296264. Its totient is φ = 6485536.

The previous prime is 6890861. The next prime is 6890957. The reversal of 6890899 is 9980986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9980986 = 2 ⋅4990493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6890899 is a prime.

6890899 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6890809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202657 + ... + 202690.

It is an arithmetic number, because the mean of its divisors is an integer number (1824066).

Almost surely, 2^6890899 is an apocalyptic number.

6890899 is a deficient number, since it is larger than the sum of its proper divisors (405365).

6890899 is a wasteful number, since it uses less digits than its factorization.

6890899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405364.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 6890899 is about 2625.0521899574. The cubic root of 6890899 is about 190.2940875043.

The spelling of 6890899 in words is "six million, eight hundred ninety thousand, eight hundred ninety-nine".