1023606 has 48 divisors (see below), whose sum is σ = 2424240. Its totient is φ = 311040.

The previous prime is 1023601. The next prime is 1023643. The reversal of 1023606 is 6063201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13986 + ... + 14058.

It is an arithmetic number, because the mean of its divisors is an integer number (50505).

2^1023606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212120).

1023606 is an abundant number, since it is smaller than the sum of its proper divisors (1400634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023606 is a wasteful number, since it uses less digits than its factorization.

1023606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1023606 is about 1011.7341548055. The cubic root of 1023606 is about 100.7807550183.

Adding to 1023606 its reverse (6063201), we get a palindrome (7086807).

The spelling of 1023606 in words is "one million, twenty-three thousand, six hundred six".