40006670 has 32 divisors (see below), whose sum is σ = 78852096. Its totient is φ = 14493600.

The previous prime is 40006663. The next prime is 40006697. The reversal of 40006670 is 7660004.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 39875 + ... + 40865.

It is an arithmetic number, because the mean of its divisors is an integer number (2464128).

Almost surely, 2^40006670 is an apocalyptic number.

40006670 is a deficient number, since it is larger than the sum of its proper divisors (38845426).

40006670 is a wasteful number, since it uses less digits than its factorization.

40006670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 40006670 is about 6325.0826081562. The cubic root of 40006670 is about 342.0141975114.

Adding to 40006670 its reverse (7660004), we get a palindrome (47666674).

The spelling of 40006670 in words is "forty million, six thousand, six hundred seventy".