987523247 has 2 divisors, whose sum is σ = 987523248. Its totient is φ = 987523246.

The previous prime is 987523241. The next prime is 987523291. The reversal of 987523247 is 742325789.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 987523247 - 2⁴ = 987523231 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987523241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493761623 + 493761624.

It is an arithmetic number, because the mean of its divisors is an integer number (493761624).

Almost surely, 2^987523247 is an apocalyptic number.

987523247 is a deficient number, since it is larger than the sum of its proper divisors (1).

987523247 is an equidigital number, since it uses as much as digits as its factorization.

987523247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 47.

The square root of 987523247 is about 31424.8826091682. The cubic root of 987523247 is about 995.8236648389.

The spelling of 987523247 in words is "nine hundred eighty-seven million, five hundred twenty-three thousand, two hundred forty-seven".