166627497 has 4 divisors (see below), whose sum is σ = 222170000. Its totient is φ = 111084996.

The previous prime is 166627471. The next prime is 166627541. The reversal of 166627497 is 794726661.

166627497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 166627497 - 2²⁰ = 165578921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166627297) 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, 27771247 + ... + 27771252.

It is an arithmetic number, because the mean of its divisors is an integer number (55542500).

Almost surely, 2^166627497 is an apocalyptic number.

It is an amenable number.

166627497 is a deficient number, since it is larger than the sum of its proper divisors (55542503).

166627497 is an equidigital number, since it uses as much as digits as its factorization.

166627497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55542502.

The product of its digits is 762048, while the sum is 48.

The square root of 166627497 is about 12908.4273635482. The cubic root of 166627497 is about 550.2780929747.

The spelling of 166627497 in words is "one hundred sixty-six million, six hundred twenty-seven thousand, four hundred ninety-seven".