40520666 has 8 divisors (see below), whose sum is σ = 60893760. Its totient is φ = 20222748.

The previous prime is 40520633. The next prime is 40520677. The reversal of 40520666 is 66602504.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17426 + ... + 19613.

It is an arithmetic number, because the mean of its divisors is an integer number (7611720).

Almost surely, 2^40520666 is an apocalyptic number.

40520666 is a deficient number, since it is larger than the sum of its proper divisors (20373094).

40520666 is a wasteful number, since it uses less digits than its factorization.

40520666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37588.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 40520666 is about 6365.5844979075. The cubic root of 40520666 is about 343.4726743509.

The spelling of 40520666 in words is "forty million, five hundred twenty thousand, six hundred sixty-six".