6851538 has 12 divisors (see below), whose sum is σ = 14845038. Its totient is φ = 2283840.

The previous prime is 6851513. The next prime is 6851543. The reversal of 6851538 is 8351586.

It can be written as a sum of positive squares in only one way, i.e., 5489649 + 1361889 = 2343^2 + 1167^2 .

It is a Curzon number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 190303 + ... + 190338.

Almost surely, 2^6851538 is an apocalyptic number.

6851538 is an abundant number, since it is smaller than the sum of its proper divisors (7993500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6851538 is a wasteful number, since it uses less digits than its factorization.

6851538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380649 (or 380646 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 6851538 is about 2617.5442689666. The cubic root of 6851538 is about 189.9310737983.

The spelling of 6851538 in words is "six million, eight hundred fifty-one thousand, five hundred thirty-eight".