1023205606 has 4 divisors (see below), whose sum is σ = 1534808412. Its totient is φ = 511602802.

The previous prime is 1023205487. The next prime is 1023205607. The reversal of 1023205606 is 6065023201.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023205607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255801400 + ... + 255801403.

It is an arithmetic number, because the mean of its divisors is an integer number (383702103).

Almost surely, 2^1023205606 is an apocalyptic number.

1023205606 is a deficient number, since it is larger than the sum of its proper divisors (511602806).

1023205606 is an equidigital number, since it uses as much as digits as its factorization.

1023205606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511602805.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1023205606 is about 31987.5851855060. The cubic root of 1023205606 is about 1007.6761282878.

Adding to 1023205606 its reverse (6065023201), we get a palindrome (7088228807).

The spelling of 1023205606 in words is "one billion, twenty-three million, two hundred five thousand, six hundred six".