6887290 has 8 divisors (see below), whose sum is σ = 12397140. Its totient is φ = 2754912.

The previous prime is 6887273. The next prime is 6887339. The reversal of 6887290 is 927886.

It can be written as a sum of positive squares in 2 ways, for example, as 6305121 + 582169 = 2511^2 + 763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344355 + ... + 344374.

Almost surely, 2^6887290 is an apocalyptic number.

6887290 is a deficient number, since it is larger than the sum of its proper divisors (5509850).

6887290 is a wasteful number, since it uses less digits than its factorization.

6887290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688736.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 6887290 is about 2624.3646850238. The cubic root of 6887290 is about 190.2608605242.

The spelling of 6887290 in words is "six million, eight hundred eighty-seven thousand, two hundred ninety".