166672603 has 2 divisors, whose sum is σ = 166672604. Its totient is φ = 166672602.

The previous prime is 166672591. The next prime is 166672609. The reversal of 166672603 is 306276661.

It is a strong prime.

It is an emirp because it is prime and its reverse (306276661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166672603 - 2²¹ = 164575451 is a prime.

It is not a weakly prime, because it can be changed into another prime (166672609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83336301 + 83336302.

It is an arithmetic number, because the mean of its divisors is an integer number (83336302).

Almost surely, 2^166672603 is an apocalyptic number.

166672603 is a deficient number, since it is larger than the sum of its proper divisors (1).

166672603 is an equidigital number, since it uses as much as digits as its factorization.

166672603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 166672603 is about 12910.1743985122. The cubic root of 166672603 is about 550.3277418518.

The spelling of 166672603 in words is "one hundred sixty-six million, six hundred seventy-two thousand, six hundred three".