5617666 has 4 divisors (see below), whose sum is σ = 8426502. Its totient is φ = 2808832.

The previous prime is 5617657. The next prime is 5617679. The reversal of 5617666 is 6667165.

It is a happy number.

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., 3500641 + 2117025 = 1871^2 + 1455^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1404415 + ... + 1404418.

Almost surely, 2^5617666 is an apocalyptic number.

5617666 is a deficient number, since it is larger than the sum of its proper divisors (2808836).

5617666 is a wasteful number, since it uses less digits than its factorization.

5617666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808835.

The product of its digits is 45360, while the sum is 37.

The square root of 5617666 is about 2370.1615978663. The cubic root of 5617666 is about 177.7673389993.

The spelling of 5617666 in words is "five million, six hundred seventeen thousand, six hundred sixty-six".