40565766 has 16 divisors (see below), whose sum is σ = 81482544. Its totient is φ = 13463424.

The previous prime is 40565761. The next prime is 40565771. The reversal of 40565766 is 66756504.

40565766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40565761) and next prime (40565771).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40565761) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13111 + ... + 15906.

It is an arithmetic number, because the mean of its divisors is an integer number (5092659).

Almost surely, 2^40565766 is an apocalyptic number.

40565766 is an abundant number, since it is smaller than the sum of its proper divisors (40916778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40565766 is a wasteful number, since it uses less digits than its factorization.

40565766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29255.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 40565766 is about 6369.1259996957. The cubic root of 40565766 is about 343.6000568746.

It can be divided in two parts, 4056 and 5766, that multiplied together give a square (23386896 = 4836²).

The spelling of 40565766 in words is "forty million, five hundred sixty-five thousand, seven hundred sixty-six".