40861065 has 32 divisors (see below), whose sum is σ = 75476736. Its totient is φ = 18489600.

The previous prime is 40861063. The next prime is 40861097. The reversal of 40861065 is 56016804.

It is not a de Polignac number, because 40861065 - 2¹ = 40861063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40861063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8679 + ... + 12531.

It is an arithmetic number, because the mean of its divisors is an integer number (2358648).

Almost surely, 2^40861065 is an apocalyptic number.

It is an amenable number.

40861065 is a deficient number, since it is larger than the sum of its proper divisors (34615671).

40861065 is a wasteful number, since it uses less digits than its factorization.

40861065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 40861065 is about 6392.2660301336. The cubic root of 40861065 is about 344.4317888941.

Adding to 40861065 its reverse (56016804), we get a palindrome (96877869).

It can be divided in two parts, 4086 and 1065, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 40861065 in words is "forty million, eight hundred sixty-one thousand, sixty-five".