6656994 has 12 divisors (see below), whose sum is σ = 14423526. Its totient is φ = 2218992.

The previous prime is 6656987. The next prime is 6657017. The reversal of 6656994 is 4996566.

It can be written as a sum of positive squares in only one way, i.e., 3470769 + 3186225 = 1863^2 + 1785^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 184899 + ... + 184934.

Almost surely, 2^6656994 is an apocalyptic number.

6656994 is an abundant number, since it is smaller than the sum of its proper divisors (7766532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6656994 is a wasteful number, since it uses less digits than its factorization.

6656994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369841 (or 369838 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 6656994 is about 2580.1151137110. The cubic root of 6656994 is about 188.1161384405.

The spelling of 6656994 in words is "six million, six hundred fifty-six thousand, nine hundred ninety-four".