40645065 has 8 divisors (see below), whose sum is σ = 65032128. Its totient is φ = 21677360.

The previous prime is 40645027. The next prime is 40645067. The reversal of 40645065 is 56054604.

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

It is not a de Polignac number, because 40645065 - 2¹⁰ = 40644041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40645067) 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, 1354821 + ... + 1354850.

It is an arithmetic number, because the mean of its divisors is an integer number (8129016).

Almost surely, 2^40645065 is an apocalyptic number.

It is an amenable number.

40645065 is a deficient number, since it is larger than the sum of its proper divisors (24387063).

40645065 is a wasteful number, since it uses less digits than its factorization.

40645065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709679.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 40645065 is about 6375.3482257834. The cubic root of 40645065 is about 343.8238038775.

Adding to 40645065 its reverse (56054604), we get a palindrome (96699669).

The spelling of 40645065 in words is "forty million, six hundred forty-five thousand, sixty-five".