40056665 has 8 divisors (see below), whose sum is σ = 52437888. Its totient is φ = 29132080.

The previous prime is 40056659. The next prime is 40056671. The reversal of 40056665 is 56665004.

It is an interprime number because it is at equal distance from previous prime (40056659) and next prime (40056671).

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

It is not a de Polignac number, because 40056665 - 2¹² = 40052569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364097 + ... + 364206.

It is an arithmetic number, because the mean of its divisors is an integer number (6554736).

Almost surely, 2^40056665 is an apocalyptic number.

It is an amenable number.

40056665 is a deficient number, since it is larger than the sum of its proper divisors (12381223).

40056665 is a wasteful number, since it uses less digits than its factorization.

40056665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728319.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 40056665 is about 6329.0334965143. The cubic root of 40056665 is about 342.1566061153.

The spelling of 40056665 in words is "forty million, fifty-six thousand, six hundred sixty-five".