4921666 has 8 divisors (see below), whose sum is σ = 7582140. Its totient is φ = 2394288.

The previous prime is 4921643. The next prime is 4921667. The reversal of 4921666 is 6661294.

It can be written as a sum of positive squares in 2 ways, for example, as 4084441 + 837225 = 2021^2 + 915^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4921667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33181 + ... + 33328.

Almost surely, 2^4921666 is an apocalyptic number.

4921666 is a deficient number, since it is larger than the sum of its proper divisors (2660474).

4921666 is a wasteful number, since it uses less digits than its factorization.

4921666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66548.

The product of its digits is 15552, while the sum is 34.

The square root of 4921666 is about 2218.4828148985. The cubic root of 4921666 is about 170.0998951522.

The spelling of 4921666 in words is "four million, nine hundred twenty-one thousand, six hundred sixty-six".