168974487 has 48 divisors (see below), whose sum is σ = 273731328. Its totient is φ = 99584640.

The previous prime is 168974473. The next prime is 168974513. The reversal of 168974487 is 784479861.

It is a happy number.

168974487 is a `hidden beast` number, since 16 + 89 + 74 + 487 = 666.

It is not a de Polignac number, because 168974487 - 2⁶ = 168974423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168974287) 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, 744268 + ... + 744494.

It is an arithmetic number, because the mean of its divisors is an integer number (5702736).

Almost surely, 2^168974487 is an apocalyptic number.

168974487 is a deficient number, since it is larger than the sum of its proper divisors (104756841).

168974487 is a wasteful number, since it uses less digits than its factorization.

168974487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 417 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 168974487 is about 12999.0186937322. The cubic root of 168974487 is about 552.8496583441.

It can be divided in two parts, 1689 and 74487, that added together give a square (76176 = 276²).

The spelling of 168974487 in words is "one hundred sixty-eight million, nine hundred seventy-four thousand, four hundred eighty-seven".