40116665 has 8 divisors (see below), whose sum is σ = 48311808. Its totient is φ = 31978800.

The previous prime is 40116653. The next prime is 40116677. The reversal of 40116665 is 56661104.

It is an interprime number because it is at equal distance from previous prime (40116653) and next prime (40116677).

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

It is not a de Polignac number, because 40116665 - 2¹⁶ = 40051129 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 12761 + ... + 15590.

It is an arithmetic number, because the mean of its divisors is an integer number (6038976).

Almost surely, 2^40116665 is an apocalyptic number.

It is an amenable number.

40116665 is a deficient number, since it is larger than the sum of its proper divisors (8195143).

40116665 is a wasteful number, since it uses less digits than its factorization.

40116665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28639.

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

The square root of 40116665 is about 6333.7717830689. The cubic root of 40116665 is about 342.3273571810.

Adding to 40116665 its reverse (56661104), we get a palindrome (96777769).

The spelling of 40116665 in words is "forty million, one hundred sixteen thousand, six hundred sixty-five".