40663323 has 16 divisors (see below), whose sum is σ = 60470560. Its totient is φ = 27006048.

The previous prime is 40663321. The next prime is 40663369. The reversal of 40663323 is 32336604.

40663323 is a `hidden beast` number, since 4 + 0 + 6 + 633 + 23 = 666.

It is not a de Polignac number, because 40663323 - 2¹ = 40663321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40663321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4761 + ... + 10197.

It is an arithmetic number, because the mean of its divisors is an integer number (3779410).

Almost surely, 2^40663323 is an apocalyptic number.

40663323 is a deficient number, since it is larger than the sum of its proper divisors (19807237).

40663323 is a wasteful number, since it uses less digits than its factorization.

40663323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723 (or 5717 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

The square root of 40663323 is about 6376.7799867958. The cubic root of 40663323 is about 343.8752787226.

Adding to 40663323 its reverse (32336604), we get a palindrome (72999927).

The spelling of 40663323 in words is "forty million, six hundred sixty-three thousand, three hundred twenty-three".