40064165 has 8 divisors (see below), whose sum is σ = 48117888. Its totient is φ = 32024080.

The previous prime is 40064161. The next prime is 40064197. The reversal of 40064165 is 56146004.

It is a happy number.

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

It is not a de Polignac number, because 40064165 - 2² = 40064161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40064161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4904 + ... + 10206.

It is an arithmetic number, because the mean of its divisors is an integer number (6014736).

Almost surely, 2^40064165 is an apocalyptic number.

It is an amenable number.

40064165 is a deficient number, since it is larger than the sum of its proper divisors (8053723).

40064165 is a wasteful number, since it uses less digits than its factorization.

40064165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6819.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40064165 is about 6329.6259763117. The cubic root of 40064165 is about 342.1779593192.

The spelling of 40064165 in words is "forty million, sixty-four thousand, one hundred sixty-five".