40616666 has 16 divisors (see below), whose sum is σ = 63975744. Its totient is φ = 19302624.

The previous prime is 40616659. The next prime is 40616669. The reversal of 40616666 is 66661604.

It is not an unprimeable number, because it can be changed into a prime (40616669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4790 + ... + 10206.

It is an arithmetic number, because the mean of its divisors is an integer number (3998484).

Almost surely, 2^40616666 is an apocalyptic number.

40616666 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40616666 is a deficient number, since it is larger than the sum of its proper divisors (23359078).

40616666 is a wasteful number, since it uses less digits than its factorization.

40616666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 40616666 is about 6373.1205857100. The cubic root of 40616666 is about 343.7437078297.

The spelling of 40616666 in words is "forty million, six hundred sixteen thousand, six hundred sixty-six".