240745987 has 4 divisors (see below), whose sum is σ = 240909160. Its totient is φ = 240582816.

The previous prime is 240745957. The next prime is 240745997. The reversal of 240745987 is 789547042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240745987 - 2¹¹ = 240743939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240745927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79353 + ... + 82330.

It is an arithmetic number, because the mean of its divisors is an integer number (60227290).

Almost surely, 2^240745987 is an apocalyptic number.

240745987 is a deficient number, since it is larger than the sum of its proper divisors (163173).

240745987 is a wasteful number, since it uses less digits than its factorization.

240745987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163172.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 240745987 is about 15515.9913315263. The cubic root of 240745987 is about 622.0897116288.

The spelling of 240745987 in words is "two hundred forty million, seven hundred forty-five thousand, nine hundred eighty-seven".