6699140 has 48 divisors (see below), whose sum is σ = 16262400. Its totient is φ = 2270592.

The previous prime is 6699103. The next prime is 6699151. The reversal of 6699140 is 419966.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 6699140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15041 + ... + 15479.

It is an arithmetic number, because the mean of its divisors is an integer number (338800).

Almost surely, 2^6699140 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 6699140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8131200).

6699140 is an abundant number, since it is smaller than the sum of its proper divisors (9563260).

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

6699140 is a wasteful number, since it uses less digits than its factorization.

6699140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 6699140 is about 2588.2696922848. The cubic root of 6699140 is about 188.5122967116.

The spelling of 6699140 in words is "six million, six hundred ninety-nine thousand, one hundred forty".