6891046974 has 96 divisors (see below), whose sum is σ = 18465108480. Its totient is φ = 1883246112.

The previous prime is 6891046973. The next prime is 6891046979. The reversal of 6891046974 is 4796401986.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 6891046974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6891046973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34212 + ... + 122280.

It is an arithmetic number, because the mean of its divisors is an integer number (192344880).

Almost surely, 2^6891046974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6891046974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9232554240).

6891046974 is an abundant number, since it is smaller than the sum of its proper divisors (11574061506).

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

6891046974 is a wasteful number, since it uses less digits than its factorization.

6891046974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88116 (or 88104 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 6891046974 is about 83012.3302528004. The cubic root of 6891046974 is about 1902.9544960888.

The spelling of 6891046974 in words is "six billion, eight hundred ninety-one million, forty-six thousand, nine hundred seventy-four".