166873487 has 16 divisors (see below), whose sum is σ = 192119040. Its totient is φ = 143457600.

The previous prime is 166873471. The next prime is 166873507. The reversal of 166873487 is 784378661.

It is not a de Polignac number, because 166873487 - 2⁴ = 166873471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166873687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18812 + ... + 26222.

It is an arithmetic number, because the mean of its divisors is an integer number (12007440).

Almost surely, 2^166873487 is an apocalyptic number.

166873487 is a deficient number, since it is larger than the sum of its proper divisors (25245553).

166873487 is a wasteful number, since it uses less digits than its factorization.

166873487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7534.

The product of its digits is 1354752, while the sum is 50.

The square root of 166873487 is about 12917.9521209826. The cubic root of 166873487 is about 550.5487492862.

The spelling of 166873487 in words is "one hundred sixty-six million, eight hundred seventy-three thousand, four hundred eighty-seven".