166987104 has 48 divisors (see below), whose sum is σ = 453463920. Its totient is φ = 53742080.

The previous prime is 166987081. The next prime is 166987109. The reversal of 166987104 is 401789661.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166987109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27207 + ... + 32774.

It is an arithmetic number, because the mean of its divisors is an integer number (9447165).

Almost surely, 2^166987104 is an apocalyptic number.

It is an amenable number.

166987104 is an abundant number, since it is smaller than the sum of its proper divisors (286476816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166987104 is a wasteful number, since it uses less digits than its factorization.

166987104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60023 (or 60015 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 166987104 is about 12922.3490124667. The cubic root of 166987104 is about 550.6736692829.

The spelling of 166987104 in words is "one hundred sixty-six million, nine hundred eighty-seven thousand, one hundred four".