166873747 has 2 divisors, whose sum is σ = 166873748. Its totient is φ = 166873746.

The previous prime is 166873727. The next prime is 166873753. The reversal of 166873747 is 747378661.

166873747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166873747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166873747.

It is not a weakly prime, because it can be changed into another prime (166873727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83436873 + 83436874.

It is an arithmetic number, because the mean of its divisors is an integer number (83436874).

Almost surely, 2^166873747 is an apocalyptic number.

166873747 is a deficient number, since it is larger than the sum of its proper divisors (1).

166873747 is an equidigital number, since it uses as much as digits as its factorization.

166873747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 49.

The square root of 166873747 is about 12917.9621844933. The cubic root of 166873747 is about 550.5490352166.

The spelling of 166873747 in words is "one hundred sixty-six million, eight hundred seventy-three thousand, seven hundred forty-seven".