166248897 has 4 divisors (see below), whose sum is σ = 221665200. Its totient is φ = 110832596.

The previous prime is 166248893. The next prime is 166248913. The reversal of 166248897 is 798842661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166248897 - 2² = 166248893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166248893) 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, 27708147 + ... + 27708152.

It is an arithmetic number, because the mean of its divisors is an integer number (55416300).

Almost surely, 2^166248897 is an apocalyptic number.

It is an amenable number.

166248897 is a deficient number, since it is larger than the sum of its proper divisors (55416303).

166248897 is an equidigital number, since it uses as much as digits as its factorization.

166248897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55416302.

The product of its digits is 1161216, while the sum is 51.

The square root of 166248897 is about 12893.7541856513. The cubic root of 166248897 is about 549.8610084043.

The spelling of 166248897 in words is "one hundred sixty-six million, two hundred forty-eight thousand, eight hundred ninety-seven".