40616865 has 12 divisors (see below), whose sum is σ = 70402644. Its totient is φ = 21662304.

The previous prime is 40616857. The next prime is 40616881. The reversal of 40616865 is 56861604.

40616865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10575504 + 30041361 = 3252^2 + 5481^2 .

It is not a de Polignac number, because 40616865 - 2³ = 40616857 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 451254 + ... + 451343.

It is an arithmetic number, because the mean of its divisors is an integer number (5866887).

Almost surely, 2^40616865 is an apocalyptic number.

40616865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40616865 is a deficient number, since it is larger than the sum of its proper divisors (29785779).

40616865 is a wasteful number, since it uses less digits than its factorization.

40616865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902608 (or 902605 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 40616865 is about 6373.1361981367. The cubic root of 40616865 is about 343.7442692158.

It can be divided in two parts, 406 and 16865, that added together give a palindrome (17271).

The spelling of 40616865 in words is "forty million, six hundred sixteen thousand, eight hundred sixty-five".