6890144 has 12 divisors (see below), whose sum is σ = 13565034. Its totient is φ = 3445056.

The previous prime is 6890123. The next prime is 6890161. The reversal of 6890144 is 4410986.

It can be written as a sum of positive squares in only one way, i.e., 6822544 + 67600 = 2612^2 + 260^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 215317 = 6890144 / (6 + 8 + 9 + 0 + 1 + 4 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 6890144.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107627 + ... + 107690.

Almost surely, 2^6890144 is an apocalyptic number.

It is an amenable number.

6890144 is a deficient number, since it is larger than the sum of its proper divisors (6674890).

6890144 is a wasteful number, since it uses less digits than its factorization.

6890144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215327 (or 215319 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 6890144 is about 2624.9083793535. The cubic root of 6890144 is about 190.2871374056.

The spelling of 6890144 in words is "six million, eight hundred ninety thousand, one hundred forty-four".