162666447 has 4 divisors (see below), whose sum is σ = 216888600. Its totient is φ = 108444296.

The previous prime is 162666437. The next prime is 162666473. The reversal of 162666447 is 744666261.

It is a happy number.

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 162666447 - 2¹⁰ = 162665423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 162666399 and 162666408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162666407) 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, 27111072 + ... + 27111077.

It is an arithmetic number, because the mean of its divisors is an integer number (54222150).

Almost surely, 2^162666447 is an apocalyptic number.

162666447 is a deficient number, since it is larger than the sum of its proper divisors (54222153).

162666447 is an equidigital number, since it uses as much as digits as its factorization.

162666447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54222152.

The product of its digits is 290304, while the sum is 42.

The square root of 162666447 is about 12754.0757015160. The cubic root of 162666447 is about 545.8826949487.

The spelling of 162666447 in words is "one hundred sixty-two million, six hundred sixty-six thousand, four hundred forty-seven".