240608661 has 8 divisors (see below), whose sum is σ = 322474560. Its totient is φ = 159574272.

The previous prime is 240608629. The next prime is 240608663. The reversal of 240608661 is 166806042.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 240608661 - 2⁵ = 240608629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240608663) 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, 207201 + ... + 208358.

It is an arithmetic number, because the mean of its divisors is an integer number (40309320).

Almost surely, 2^240608661 is an apocalyptic number.

It is an amenable number.

240608661 is a deficient number, since it is larger than the sum of its proper divisors (81865899).

240608661 is a wasteful number, since it uses less digits than its factorization.

240608661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415755.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 240608661 is about 15511.5653948916. The cubic root of 240608661 is about 621.9714052742.

The spelling of 240608661 in words is "two hundred forty million, six hundred eight thousand, six hundred sixty-one".