6991270 has 32 divisors (see below), whose sum is σ = 14787360. Its totient is φ = 2346240.

The previous prime is 6991253. The next prime is 6991277. The reversal of 6991270 is 721996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6991277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1015 + ... + 3874.

It is an arithmetic number, because the mean of its divisors is an integer number (462105).

Almost surely, 2^6991270 is an apocalyptic number.

6991270 is an abundant number, since it is smaller than the sum of its proper divisors (7796090).

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

6991270 is a wasteful number, since it uses less digits than its factorization.

6991270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 6991270 is about 2644.1009814302. The cubic root of 6991270 is about 191.2135619133.

The spelling of 6991270 in words is "six million, nine hundred ninety-one thousand, two hundred seventy".