987172875 has 48 divisors (see below), whose sum is σ = 1916460000. Its totient is φ = 485985600.

The previous prime is 987172871. The next prime is 987172933. The reversal of 987172875 is 578271789.

It is a happy number.

It is not a de Polignac number, because 987172875 - 2² = 987172871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (987172871) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19125 + ... + 48374.

It is an arithmetic number, because the mean of its divisors is an integer number (39926250).

Almost surely, 2^987172875 is an apocalyptic number.

987172875 is a deficient number, since it is larger than the sum of its proper divisors (929287125).

987172875 is a wasteful number, since it uses less digits than its factorization.

987172875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67533 (or 67520 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 54.

The square root of 987172875 is about 31419.3073602841. The cubic root of 987172875 is about 995.7058785817.

The spelling of 987172875 in words is "nine hundred eighty-seven million, one hundred seventy-two thousand, eight hundred seventy-five".