6677999 has 4 divisors (see below), whose sum is σ = 6686064. Its totient is φ = 6669936.

The previous prime is 6677971. The next prime is 6678017. The reversal of 6677999 is 9997766.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6677999 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6677999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6677959) 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, 2627 + ... + 4500.

It is an arithmetic number, because the mean of its divisors is an integer number (1671516).

Almost surely, 2^6677999 is an apocalyptic number.

6677999 is a deficient number, since it is larger than the sum of its proper divisors (8065).

6677999 is an equidigital number, since it uses as much as digits as its factorization.

6677999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8064.

The product of its digits is 1285956, while the sum is 53.

The square root of 6677999 is about 2584.1824625982. The cubic root of 6677999 is about 188.3137867480.

The spelling of 6677999 in words is "six million, six hundred seventy-seven thousand, nine hundred ninety-nine".