1606564223 has 4 divisors (see below), whose sum is σ = 1752615528. Its totient is φ = 1460512920.

The previous prime is 1606564177. The next prime is 1606564241. The reversal of 1606564223 is 3224656061.

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 1606564223 - 2¹² = 1606560127 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 (1606567223) 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, 73025636 + ... + 73025657.

It is an arithmetic number, because the mean of its divisors is an integer number (438153882).

Almost surely, 2^1606564223 is an apocalyptic number.

1606564223 is a deficient number, since it is larger than the sum of its proper divisors (146051305).

1606564223 is a wasteful number, since it uses less digits than its factorization.

1606564223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146051304.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1606564223 is about 40081.9688014449. The cubic root of 1606564223 is about 1171.2044049182.

The spelling of 1606564223 in words is "one billion, six hundred six million, five hundred sixty-four thousand, two hundred twenty-three".