6890844475 has 24 divisors (see below), whose sum is σ = 9128651840. Its totient is φ = 5144562720.

The previous prime is 6890844451. The next prime is 6890844479. The reversal of 6890844475 is 5744480986.

It is a happy number.

It is not a de Polignac number, because 6890844475 - 2¹³ = 6890836283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6890844479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76437 + ... + 140086.

Almost surely, 2^6890844475 is an apocalyptic number.

6890844475 is a deficient number, since it is larger than the sum of its proper divisors (2237807365).

6890844475 is a wasteful number, since it uses less digits than its factorization.

6890844475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216619 (or 216614 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The square root of 6890844475 is about 83011.1105515400. The cubic root of 6890844475 is about 1902.9358559528.

The spelling of 6890844475 in words is "six billion, eight hundred ninety million, eight hundred forty-four thousand, four hundred seventy-five".