40064666 has 16 divisors (see below), whose sum is σ = 62899200. Its totient is φ = 19103568.

The previous prime is 40064659. The next prime is 40064671. The reversal of 40064666 is 66646004.

It is a happy number.

40064666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16775 + ... + 19013.

It is an arithmetic number, because the mean of its divisors is an integer number (3931200).

Almost surely, 2^40064666 is an apocalyptic number.

40064666 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40064666 is a deficient number, since it is larger than the sum of its proper divisors (22834534).

40064666 is a wasteful number, since it uses less digits than its factorization.

40064666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 40064666 is about 6329.6655519861. The cubic root of 40064666 is about 342.1793856183.

The spelling of 40064666 in words is "forty million, sixty-four thousand, six hundred sixty-six".