1676618666 has 8 divisors (see below), whose sum is σ = 2582899140. Its totient is φ = 815652288.

The previous prime is 1676618651. The next prime is 1676618677. The reversal of 1676618666 is 6668166761.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1344322225 + 332296441 = 36665^2 + 18229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1676618666² = 5622100302359239112, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11328431 + ... + 11328578.

Almost surely, 2^1676618666 is an apocalyptic number.

1676618666 is a deficient number, since it is larger than the sum of its proper divisors (906280474).

1676618666 is a wasteful number, since it uses less digits than its factorization.

1676618666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22657048.

The product of its digits is 2612736, while the sum is 53.

The square root of 1676618666 is about 40946.5342367336. The cubic root of 1676618666 is about 1187.9862998983.

The spelling of 1676618666 in words is "one billion, six hundred seventy-six million, six hundred eighteen thousand, six hundred sixty-six".