40065715 has 8 divisors (see below), whose sum is σ = 48867408. Its totient is φ = 31526880.

The previous prime is 40065713. The next prime is 40065763. The reversal of 40065715 is 51756004.

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

It is not a de Polignac number, because 40065715 - 2¹ = 40065713 is a prime.

It is a super-2 number, since 2×40065715² = 3210523036922450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40065713) 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, 65377 + ... + 65986.

It is an arithmetic number, because the mean of its divisors is an integer number (6108426).

Almost surely, 2^40065715 is an apocalyptic number.

40065715 is a deficient number, since it is larger than the sum of its proper divisors (8801693).

40065715 is a wasteful number, since it uses less digits than its factorization.

40065715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131429.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 40065715 is about 6329.7484152216. The cubic root of 40065715 is about 342.1823719824.

The spelling of 40065715 in words is "forty million, sixty-five thousand, seven hundred fifteen".