987760243 has 2 divisors, whose sum is σ = 987760244. Its totient is φ = 987760242.

The previous prime is 987760171. The next prime is 987760261. The reversal of 987760243 is 342067789.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987760243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 987760193 and 987760202.

It is not a weakly prime, because it can be changed into another prime (987760283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493880121 + 493880122.

It is an arithmetic number, because the mean of its divisors is an integer number (493880122).

Almost surely, 2^987760243 is an apocalyptic number.

987760243 is a deficient number, since it is larger than the sum of its proper divisors (1).

987760243 is an equidigital number, since it uses as much as digits as its factorization.

987760243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 987760243 is about 31428.6532164520. The cubic root of 987760243 is about 995.9033211402.

The spelling of 987760243 in words is "nine hundred eighty-seven million, seven hundred sixty thousand, two hundred forty-three".