987243275 has 12 divisors (see below), whose sum is σ = 1229311200. Its totient is φ = 786485280.

The previous prime is 987243253. The next prime is 987243277. The reversal of 987243275 is 572342789.

It is a happy number.

It is not a de Polignac number, because 987243275 - 2¹⁶ = 987177739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (987243277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76640 + ... + 88589.

It is an arithmetic number, because the mean of its divisors is an integer number (102442600).

Almost surely, 2^987243275 is an apocalyptic number.

987243275 is a deficient number, since it is larger than the sum of its proper divisors (242067925).

987243275 is a wasteful number, since it uses less digits than its factorization.

987243275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165478 (or 165473 counting only the distinct ones).

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

The square root of 987243275 is about 31420.4276705458. The cubic root of 987243275 is about 995.7295475288.

The spelling of 987243275 in words is "nine hundred eighty-seven million, two hundred forty-three thousand, two hundred seventy-five".