1671565223 has 8 divisors (see below), whose sum is σ = 1762217520. Its totient is φ = 1581180480.

The previous prime is 1671565219. The next prime is 1671565279. The reversal of 1671565223 is 3225651761.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1671565223 - 2² = 1671565219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671565123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53990 + ... + 79107.

It is an arithmetic number, because the mean of its divisors is an integer number (220277190).

Almost surely, 2^1671565223 is an apocalyptic number.

1671565223 is a deficient number, since it is larger than the sum of its proper divisors (90652297).

1671565223 is a wasteful number, since it uses less digits than its factorization.

1671565223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133777.

The product of its digits is 75600, while the sum is 38.

The square root of 1671565223 is about 40884.7798453165. The cubic root of 1671565223 is about 1186.7915414903.

The spelling of 1671565223 in words is "one billion, six hundred seventy-one million, five hundred sixty-five thousand, two hundred twenty-three".