43798666 has 4 divisors (see below), whose sum is σ = 65698002. Its totient is φ = 21899332.

The previous prime is 43798649. The next prime is 43798679. The reversal of 43798666 is 66689734.

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

It can be written as a sum of positive squares in only one way, i.e., 39325441 + 4473225 = 6271^2 + 2115^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10949665 + ... + 10949668.

Almost surely, 2^43798666 is an apocalyptic number.

43798666 is a deficient number, since it is larger than the sum of its proper divisors (21899336).

43798666 is a wasteful number, since it uses less digits than its factorization.

43798666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21899335.

The product of its digits is 1306368, while the sum is 49.

The square root of 43798666 is about 6618.0560589950. The cubic root of 43798666 is about 352.4955410800.

The spelling of 43798666 in words is "forty-three million, seven hundred ninety-eight thousand, six hundred sixty-six".