6664698 has 12 divisors (see below), whose sum is σ = 14440218. Its totient is φ = 2221560.

The previous prime is 6664667. The next prime is 6664711. The reversal of 6664698 is 8964666.

It can be written as a sum of positive squares in only one way, i.e., 3932289 + 2732409 = 1983^2 + 1653^2 .

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, 185113 + ... + 185148.

Almost surely, 2^6664698 is an apocalyptic number.

6664698 is an abundant number, since it is smaller than the sum of its proper divisors (7775520).

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

6664698 is a wasteful number, since it uses less digits than its factorization.

6664698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370269 (or 370266 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 6664698 is about 2581.6076386624. The cubic root of 6664698 is about 188.1886780897.

Subtracting 6664698 from its reverse (8964666), we obtain a cube (2299968 = 132³).

The spelling of 6664698 in words is "six million, six hundred sixty-four thousand, six hundred ninety-eight".