240536987 has 4 divisors (see below), whose sum is σ = 240580536. Its totient is φ = 240493440.

The previous prime is 240536957. The next prime is 240536999. The reversal of 240536987 is 789635042.

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 240536987 - 2¹⁴ = 240520603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240536917) 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, 12038 + ... + 25019.

It is an arithmetic number, because the mean of its divisors is an integer number (60145134).

Almost surely, 2^240536987 is an apocalyptic number.

240536987 is a deficient number, since it is larger than the sum of its proper divisors (43549).

240536987 is an equidigital number, since it uses as much as digits as its factorization.

240536987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43548.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 240536987 is about 15509.2548821663. The cubic root of 240536987 is about 621.9096402411.

The spelling of 240536987 in words is "two hundred forty million, five hundred thirty-six thousand, nine hundred eighty-seven".