41642666 has 16 divisors (see below), whose sum is σ = 69589800. Its totient is φ = 18556608.

The previous prime is 41642651. The next prime is 41642693. The reversal of 41642666 is 66624614.

It can be written as a sum of positive squares in 4 ways, for example, as 40132225 + 1510441 = 6335^2 + 1229^2 .

It is a super-2 number, since 2×41642666² = 3468223263175112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26861 + ... + 28368.

Almost surely, 2^41642666 is an apocalyptic number.

41642666 is a deficient number, since it is larger than the sum of its proper divisors (27947134).

41642666 is a wasteful number, since it uses less digits than its factorization.

41642666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55273.

The product of its digits is 41472, while the sum is 35.

The square root of 41642666 is about 6453.1128922405. The cubic root of 41642666 is about 346.6140598592.

The spelling of 41642666 in words is "forty-one million, six hundred forty-two thousand, six hundred sixty-six".