6891330 has 16 divisors (see below), whose sum is σ = 16539264. Its totient is φ = 1837680.

The previous prime is 6891323. The next prime is 6891337. The reversal of 6891330 is 331986.

6891330 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (6891323) and next prime (6891337).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 229711 = 6891330 / (6 + 8 + 9 + 1 + 3 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (6891337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114826 + ... + 114885.

It is an arithmetic number, because the mean of its divisors is an integer number (1033704).

Almost surely, 2^6891330 is an apocalyptic number.

6891330 is an abundant number, since it is smaller than the sum of its proper divisors (9647934).

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

6891330 is a wasteful number, since it uses less digits than its factorization.

6891330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229721.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 6891330 is about 2625.1342822797. The cubic root of 6891330 is about 190.2980548164.

The spelling of 6891330 in words is "six million, eight hundred ninety-one thousand, three hundred thirty".