87673172 has 6 divisors (see below), whose sum is σ = 153428058. Its totient is φ = 43836584.

The previous prime is 87673153. The next prime is 87673207. The reversal of 87673172 is 27137678.

It can be written as a sum of positive squares in only one way, i.e., 86974276 + 698896 = 9326^2 + 836^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10959143 + ... + 10959150.

It is an arithmetic number, because the mean of its divisors is an integer number (25571343).

Almost surely, 2^87673172 is an apocalyptic number.

It is an amenable number.

87673172 is a deficient number, since it is larger than the sum of its proper divisors (65754886).

87673172 is a wasteful number, since it uses less digits than its factorization.

87673172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21918297 (or 21918295 counting only the distinct ones).

The product of its digits is 98784, while the sum is 41.

The square root of 87673172 is about 9363.3953243468. The cubic root of 87673172 is about 444.2446842755.

The spelling of 87673172 in words is "eighty-seven million, six hundred seventy-three thousand, one hundred seventy-two".