6891472 has 40 divisors (see below), whose sum is σ = 15681536. Its totient is φ = 2871936.

The previous prime is 6891461. The next prime is 6891487. The reversal of 6891472 is 2741986.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 3313 + ... + 4975.

Almost surely, 2^6891472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6891472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7840768).

6891472 is an abundant number, since it is smaller than the sum of its proper divisors (8790064).

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

6891472 is a wasteful number, since it uses less digits than its factorization.

6891472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715 (or 1709 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 6891472 is about 2625.1613283758. The cubic root of 6891472 is about 190.2993618761.

It can be divided in two parts, 68914 and 72, that added together give a palindrome (68986).

The spelling of 6891472 in words is "six million, eight hundred ninety-one thousand, four hundred seventy-two".