166504627 has 4 divisors (see below), whose sum is σ = 171875776. Its totient is φ = 161133480.

The previous prime is 166504621. The next prime is 166504633. The reversal of 166504627 is 726405661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 726405661 = 191 ⋅3803171.

It is an interprime number because it is at equal distance from previous prime (166504621) and next prime (166504633).

It is a cyclic number.

It is not a de Polignac number, because 166504627 - 2¹⁵ = 166471859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166504621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2685528 + ... + 2685589.

It is an arithmetic number, because the mean of its divisors is an integer number (42968944).

Almost surely, 2^166504627 is an apocalyptic number.

166504627 is a deficient number, since it is larger than the sum of its proper divisors (5371149).

166504627 is an equidigital number, since it uses as much as digits as its factorization.

166504627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5371148.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 166504627 is about 12903.6671919265. The cubic root of 166504627 is about 550.1428025888.

The spelling of 166504627 in words is "one hundred sixty-six million, five hundred four thousand, six hundred twenty-seven".