40668503 has 2 divisors, whose sum is σ = 40668504. Its totient is φ = 40668502.

The previous prime is 40668499. The next prime is 40668541. The reversal of 40668503 is 30586604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40668503 - 2² = 40668499 is a prime.

It is a super-2 number, since 2×40668503² = 3307854272522018, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40668503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40668553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20334251 + 20334252.

It is an arithmetic number, because the mean of its divisors is an integer number (20334252).

Almost surely, 2^40668503 is an apocalyptic number.

40668503 is a deficient number, since it is larger than the sum of its proper divisors (1).

40668503 is an equidigital number, since it uses as much as digits as its factorization.

40668503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 40668503 is about 6377.1861349658. The cubic root of 40668503 is about 343.8898799093.

The spelling of 40668503 in words is "forty million, six hundred sixty-eight thousand, five hundred three".