87171274 has 32 divisors (see below), whose sum is σ = 144244800. Its totient is φ = 39325440.

The previous prime is 87171263. The next prime is 87171283. The reversal of 87171274 is 47217178.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207837 + ... + 208255.

It is an arithmetic number, because the mean of its divisors is an integer number (4507650).

Almost surely, 2^87171274 is an apocalyptic number.

87171274 is a deficient number, since it is larger than the sum of its proper divisors (57073526).

87171274 is a wasteful number, since it uses less digits than its factorization.

87171274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678.

The product of its digits is 21952, while the sum is 37.

The square root of 87171274 is about 9336.5557889406. Note that the first 3 decimals coincide. The cubic root of 87171274 is about 443.3953467563.

The spelling of 87171274 in words is "eighty-seven million, one hundred seventy-one thousand, two hundred seventy-four".