40618066 has 12 divisors (see below), whose sum is σ = 64570122. Its totient is φ = 19096896.

The previous prime is 40618063. The next prime is 40618073. The reversal of 40618066 is 66081604.

It can be written as a sum of positive squares in 3 ways, for example, as 33884041 + 6734025 = 5821^2 + 2595^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40618063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36616 + ... + 37708.

Almost surely, 2^40618066 is an apocalyptic number.

40618066 is a deficient number, since it is larger than the sum of its proper divisors (23952056).

40618066 is an equidigital number, since it uses as much as digits as its factorization.

40618066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205 (or 1112 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 40618066 is about 6373.2304210659. The cubic root of 40618066 is about 343.7476572402.

The spelling of 40618066 in words is "forty million, six hundred eighteen thousand, sixty-six".