6690867 has 8 divisors (see below), whose sum is σ = 8934096. Its totient is φ = 4454112.

The previous prime is 6690863. The next prime is 6690881. The reversal of 6690867 is 7680966.

It is a happy number.

6690867 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6690867 - 2² = 6690863 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

6690867 is a lucky number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (6690863) 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, 1873 + ... + 4109.

It is an arithmetic number, because the mean of its divisors is an integer number (1116762).

Almost surely, 2^6690867 is an apocalyptic number.

6690867 is a deficient number, since it is larger than the sum of its proper divisors (2243229).

6690867 is a wasteful number, since it uses less digits than its factorization.

6690867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 6690867 is about 2586.6710266286. The cubic root of 6690867 is about 188.4346646246.

Subtracting 6690867 from its reverse (7680966), we obtain a palindrome (990099).

It can be divided in two parts, 6690 and 867, that added together give a palindrome (7557).

The spelling of 6690867 in words is "six million, six hundred ninety thousand, eight hundred sixty-seven".