40664803 has 4 divisors (see below), whose sum is σ = 40678200. Its totient is φ = 40651408.

The previous prime is 40664801. The next prime is 40664809. The reversal of 40664803 is 30846604.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40664803 - 2¹ = 40664801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40664801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276 + ... + 9022.

It is an arithmetic number, because the mean of its divisors is an integer number (10169550).

Almost surely, 2^40664803 is an apocalyptic number.

40664803 is a deficient number, since it is larger than the sum of its proper divisors (13397).

40664803 is an equidigital number, since it uses as much as digits as its factorization.

40664803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13396.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 40664803 is about 6376.8960317697. The cubic root of 40664803 is about 343.8794506168.

The spelling of 40664803 in words is "forty million, six hundred sixty-four thousand, eight hundred three".