6990771 has 8 divisors (see below), whose sum is σ = 9339840. Its totient is φ = 4651112.

The previous prime is 6990761. The next prime is 6990799. The reversal of 6990771 is 1770996.

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

It is a cyclic number.

It is not a de Polignac number, because 6990771 - 2⁹ = 6990259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6990701) 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, 381 + ... + 3758.

It is an arithmetic number, because the mean of its divisors is an integer number (1167480).

Almost surely, 2^6990771 is an apocalyptic number.

6990771 is a deficient number, since it is larger than the sum of its proper divisors (2349069).

6990771 is a wasteful number, since it uses less digits than its factorization.

6990771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4705.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 6990771 is about 2644.0066187512. The cubic root of 6990771 is about 191.2090125330.

The spelling of 6990771 in words is "six million, nine hundred ninety thousand, seven hundred seventy-one".