240661668 has 24 divisors (see below), whose sum is σ = 604739968. Its totient is φ = 74049696.

The previous prime is 240661661. The next prime is 240661693. The reversal of 240661668 is 866166042.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (240661661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771196 + ... + 771507.

Almost surely, 2^240661668 is an apocalyptic number.

It is an amenable number.

240661668 is an abundant number, since it is smaller than the sum of its proper divisors (364078300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

240661668 is a wasteful number, since it uses less digits than its factorization.

240661668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542723 (or 1542721 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 240661668 is about 15513.2739291228. The cubic root of 240661668 is about 622.0170761399.

The spelling of 240661668 in words is "two hundred forty million, six hundred sixty-one thousand, six hundred sixty-eight".