240493666 has 24 divisors (see below), whose sum is σ = 420173676. Its totient is φ = 102936960.

The previous prime is 240493657. The next prime is 240493667. The reversal of 240493666 is 666394042.

It can be written as a sum of positive squares in 2 ways, for example, as 236513641 + 3980025 = 15379^2 + 1995^2 .

It is a super-2 number, since 2×240493666² = 115674406772239112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (240493667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144310 + ... + 145966.

Almost surely, 2^240493666 is an apocalyptic number.

240493666 is a deficient number, since it is larger than the sum of its proper divisors (179680010).

240493666 is a wasteful number, since it uses less digits than its factorization.

240493666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3154 (or 3147 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 240493666 is about 15507.8582015699. The cubic root of 240493666 is about 621.8723024419.

The spelling of 240493666 in words is "two hundred forty million, four hundred ninety-three thousand, six hundred sixty-six".