240665970 has 64 divisors (see below), whose sum is σ = 615444480. Its totient is φ = 60055488.

The previous prime is 240665959. The next prime is 240665987. The reversal of 240665970 is 79566042.

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 44767 + ... + 49853.

It is an arithmetic number, because the mean of its divisors is an integer number (9616320).

Almost surely, 2^240665970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240665970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307722240).

240665970 is an abundant number, since it is smaller than the sum of its proper divisors (374778510).

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

240665970 is a wasteful number, since it uses less digits than its factorization.

240665970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5199.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 240665970 is about 15513.4125839546. The cubic root of 240665970 is about 622.0207824516.

The spelling of 240665970 in words is "two hundred forty million, six hundred sixty-five thousand, nine hundred seventy".