6990755 has 4 divisors (see below), whose sum is σ = 8388912. Its totient is φ = 5592600.

The previous prime is 6990751. The next prime is 6990761. The reversal of 6990755 is 5570996.

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

It is not a de Polignac number, because 6990755 - 2² = 6990751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6990751) 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, 699071 + ... + 699080.

It is an arithmetic number, because the mean of its divisors is an integer number (2097228).

Almost surely, 2^6990755 is an apocalyptic number.

6990755 is a deficient number, since it is larger than the sum of its proper divisors (1398157).

6990755 is a wasteful number, since it uses less digits than its factorization.

6990755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398156.

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 6990755 is about 2644.0035930384. The cubic root of 6990755 is about 191.2088666576.

The spelling of 6990755 in words is "six million, nine hundred ninety thousand, seven hundred fifty-five".