166410563 has 4 divisors (see below), whose sum is σ = 181538808. Its totient is φ = 151282320.

The previous prime is 166410551. The next prime is 166410631. The reversal of 166410563 is 365014661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166410563 - 2⁴ = 166410547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166410523) 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, 7564106 + ... + 7564127.

It is an arithmetic number, because the mean of its divisors is an integer number (45384702).

Almost surely, 2^166410563 is an apocalyptic number.

166410563 is a deficient number, since it is larger than the sum of its proper divisors (15128245).

166410563 is a wasteful number, since it uses less digits than its factorization.

166410563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15128244.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 166410563 is about 12900.0218216870. The cubic root of 166410563 is about 550.0391850870.

The spelling of 166410563 in words is "one hundred sixty-six million, four hundred ten thousand, five hundred sixty-three".