40663601 has 8 divisors (see below), whose sum is σ = 45304704. Its totient is φ = 36179920.

The previous prime is 40663589. The next prime is 40663603. The reversal of 40663601 is 10636604.

40663601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40663601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40663603) 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, 38810 + ... + 39843.

It is an arithmetic number, because the mean of its divisors is an integer number (5663088).

Almost surely, 2^40663601 is an apocalyptic number.

It is an amenable number.

40663601 is a deficient number, since it is larger than the sum of its proper divisors (4641103).

40663601 is a wasteful number, since it uses less digits than its factorization.

40663601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78711.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 40663601 is about 6376.8017845939. The cubic root of 40663601 is about 343.8760623699.

It can be divided in two parts, 4066 and 3601, that added together give a palindrome (7667).

The spelling of 40663601 in words is "forty million, six hundred sixty-three thousand, six hundred one".