9871634 has 4 divisors (see below), whose sum is σ = 14807454. Its totient is φ = 4935816.

The previous prime is 9871633. The next prime is 9871649. The reversal of 9871634 is 4361789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4361789 = 23 ⋅189643.

It can be written as a sum of positive squares in only one way, i.e., 7546009 + 2325625 = 2747^2 + 1525^2 .

It is not an unprimeable number, because it can be changed into a prime (9871633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2467907 + ... + 2467910.

Almost surely, 2^9871634 is an apocalyptic number.

9871634 is a deficient number, since it is larger than the sum of its proper divisors (4935820).

9871634 is a wasteful number, since it uses less digits than its factorization.

9871634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935819.

The product of its digits is 36288, while the sum is 38.

The square root of 9871634 is about 3141.9156576840. The cubic root of 9871634 is about 214.5176422624.

The spelling of 9871634 in words is "nine million, eight hundred seventy-one thousand, six hundred thirty-four".