6990394 has 16 divisors (see below), whose sum is σ = 10725120. Its totient is φ = 3416400.

The previous prime is 6990371. The next prime is 6990419. The reversal of 6990394 is 4930996.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23712 + ... + 24004.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^6990394 is an apocalyptic number.

6990394 is a deficient number, since it is larger than the sum of its proper divisors (3734726).

6990394 is a wasteful number, since it uses less digits than its factorization.

6990394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 6990394 is about 2643.9353244737. The cubic root of 6990394 is about 191.2055752825.

The spelling of 6990394 in words is "six million, nine hundred ninety thousand, three hundred ninety-four".