40511666 has 24 divisors (see below), whose sum is σ = 68086980. Its totient is φ = 18048576.

The previous prime is 40511657. The next prime is 40511687. The reversal of 40511666 is 66611504.

It can be written as a sum of positive squares in 6 ways, for example, as 10426441 + 30085225 = 3229^2 + 5485^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7736 + ... + 11868.

Almost surely, 2^40511666 is an apocalyptic number.

40511666 is a deficient number, since it is larger than the sum of its proper divisors (27575314).

40511666 is a wasteful number, since it uses less digits than its factorization.

40511666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4190 (or 4177 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40511666 is about 6364.8775322075. The cubic root of 40511666 is about 343.4472430236.

The spelling of 40511666 in words is "forty million, five hundred eleven thousand, six hundred sixty-six".