1607644223 has 4 divisors (see below), whose sum is σ = 1611374688. Its totient is φ = 1603913760.

The previous prime is 1607644217. The next prime is 1607644273. The reversal of 1607644223 is 3224467061.

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 1607644223 - 2¹² = 1607640127 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 (1607644273) 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, 1864586 + ... + 1865447.

It is an arithmetic number, because the mean of its divisors is an integer number (402843672).

Almost surely, 2^1607644223 is an apocalyptic number.

1607644223 is a deficient number, since it is larger than the sum of its proper divisors (3730465).

1607644223 is an equidigital number, since it uses as much as digits as its factorization.

1607644223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730464.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 1607644223 is about 40095.4389301327. The cubic root of 1607644223 is about 1171.4667904084.

The spelling of 1607644223 in words is "one billion, six hundred seven million, six hundred forty-four thousand, two hundred twenty-three".