6697887 has 16 divisors (see below), whose sum is σ = 10248960. Its totient is φ = 3811392.

The previous prime is 6697877. The next prime is 6697897. The reversal of 6697887 is 7887966.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6697877) and next prime (6697897).

It is not a de Polignac number, because 6697887 - 2⁷ = 6697759 is a prime.

6697887 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6697837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6064 + ... + 7082.

It is an arithmetic number, because the mean of its divisors is an integer number (640560).

Almost surely, 2^6697887 is an apocalyptic number.

6697887 is a deficient number, since it is larger than the sum of its proper divisors (3551073).

6697887 is a wasteful number, since it uses less digits than its factorization.

6697887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342.

The product of its digits is 1016064, while the sum is 51.

The square root of 6697887 is about 2588.0276273641. The cubic root of 6697887 is about 188.5005429324.

The spelling of 6697887 in words is "six million, six hundred ninety-seven thousand, eight hundred eighty-seven".