6891970475 has 24 divisors (see below), whose sum is σ = 9232971552. Its totient is φ = 5073120000.

The previous prime is 6891970451. The next prime is 6891970513. The reversal of 6891970475 is 5740791986.

6891970475 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6891970475 - 2⁶ = 6891970411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6891970475.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67850 + ... + 135600.

It is an arithmetic number, because the mean of its divisors is an integer number (384707148).

Almost surely, 2^6891970475 is an apocalyptic number.

6891970475 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6891970475 is a deficient number, since it is larger than the sum of its proper divisors (2341001077).

6891970475 is a wasteful number, since it uses less digits than its factorization.

6891970475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68087 (or 68082 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 56.

The square root of 6891970475 is about 83017.8924991474. The cubic root of 6891970475 is about 1903.0395001957.

The spelling of 6891970475 in words is "six billion, eight hundred ninety-one million, nine hundred seventy thousand, four hundred seventy-five".