6623867 has 4 divisors (see below), whose sum is σ = 6632976. Its totient is φ = 6614760.

The previous prime is 6623857. The next prime is 6623873. The reversal of 6623867 is 7683266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6623867 - 2⁸ = 6623611 is a prime.

It is a super-2 number, since 2×6623867² = 87751228067378, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6623867.

It is not an unprimeable number, because it can be changed into a prime (6623857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3359 + ... + 4952.

It is an arithmetic number, because the mean of its divisors is an integer number (1658244).

Almost surely, 2^6623867 is an apocalyptic number.

6623867 is a deficient number, since it is larger than the sum of its proper divisors (9109).

6623867 is an equidigital number, since it uses as much as digits as its factorization.

6623867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9108.

The product of its digits is 72576, while the sum is 38.

The square root of 6623867 is about 2573.6874324595. The cubic root of 6623867 is about 187.8035805050.

The spelling of 6623867 in words is "six million, six hundred twenty-three thousand, eight hundred sixty-seven".