6990007 has 4 divisors (see below), whose sum is σ = 6995296. Its totient is φ = 6984720.

The previous prime is 6990001. The next prime is 6990017. The reversal of 6990007 is 7000996.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6990007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282 + ... + 3952.

It is an arithmetic number, because the mean of its divisors is an integer number (1748824).

Almost surely, 2^6990007 is an apocalyptic number.

6990007 is a deficient number, since it is larger than the sum of its proper divisors (5289).

6990007 is a wasteful number, since it uses less digits than its factorization.

6990007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5288.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 6990007 is about 2643.8621371017. The cubic root of 6990007 is about 191.2020467297.

The spelling of 6990007 in words is "six million, nine hundred ninety thousand, seven".