40073666 has 4 divisors (see below), whose sum is σ = 60110502. Its totient is φ = 20036832.

The previous prime is 40073653. The next prime is 40073711. The reversal of 40073666 is 66637004.

40073666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39325441 + 748225 = 6271^2 + 865^2 .

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 as a sum of consecutive naturals, namely, 10018415 + ... + 10018418.

Almost surely, 2^40073666 is an apocalyptic number.

40073666 is a deficient number, since it is larger than the sum of its proper divisors (20036836).

40073666 is a wasteful number, since it uses less digits than its factorization.

40073666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20036835.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 40073666 is about 6330.3764501015. The cubic root of 40073666 is about 342.2050057320.

The spelling of 40073666 in words is "forty million, seventy-three thousand, six hundred sixty-six".