40660111 has 2 divisors, whose sum is σ = 40660112. Its totient is φ = 40660110.

The previous prime is 40660097. The next prime is 40660121. The reversal of 40660111 is 11106604.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40660111 - 2⁵ = 40660079 is a prime.

It is a super-3 number, since 3×40660111³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40660121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20330055 + 20330056.

It is an arithmetic number, because the mean of its divisors is an integer number (20330056).

Almost surely, 2^40660111 is an apocalyptic number.

40660111 is a deficient number, since it is larger than the sum of its proper divisors (1).

40660111 is an equidigital number, since it uses as much as digits as its factorization.

40660111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 40660111 is about 6376.5281305739. The cubic root of 40660111 is about 343.8662242365.

Adding to 40660111 its reverse (11106604), we get a palindrome (51766715).

The spelling of 40660111 in words is "forty million, six hundred sixty thousand, one hundred eleven".