40665753 has 16 divisors (see below), whose sum is σ = 60394240. Its totient is φ = 27043632.

The previous prime is 40665749. The next prime is 40665761. The reversal of 40665753 is 35756604.

It is not a de Polignac number, because 40665753 - 2² = 40665749 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40665773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10875 + ... + 14127.

It is an arithmetic number, because the mean of its divisors is an integer number (3774640).

Almost surely, 2^40665753 is an apocalyptic number.

It is an amenable number.

40665753 is a deficient number, since it is larger than the sum of its proper divisors (19728487).

40665753 is a wasteful number, since it uses less digits than its factorization.

40665753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3725 (or 3719 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 40665753 is about 6376.9705189847. The cubic root of 40665753 is about 343.8821284685.

The spelling of 40665753 in words is "forty million, six hundred sixty-five thousand, seven hundred fifty-three".