6891746 has 4 divisors (see below), whose sum is σ = 10337622. Its totient is φ = 3445872.

The previous prime is 6891733. The next prime is 6891769. The reversal of 6891746 is 6471986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6471986 = 2 ⋅3235993.

It can be written as a sum of positive squares in only one way, i.e., 6630625 + 261121 = 2575^2 + 511^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1722935 + ... + 1722938.

Almost surely, 2^6891746 is an apocalyptic number.

6891746 is a deficient number, since it is larger than the sum of its proper divisors (3445876).

6891746 is a wasteful number, since it uses less digits than its factorization.

6891746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3445875.

The product of its digits is 72576, while the sum is 41.

The square root of 6891746 is about 2625.2135151260. The cubic root of 6891746 is about 190.3018838982.

The spelling of 6891746 in words is "six million, eight hundred ninety-one thousand, seven hundred forty-six".