1299606 has 64 divisors (see below), whose sum is σ = 3386880. Its totient is φ = 322560.

The previous prime is 1299601. The next prime is 1299631. The reversal of 1299606 is 6069921.

1299606 = 90² + 91² + ... + 166².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13350 + ... + 13446.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2^1299606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1693440).

1299606 is an abundant number, since it is smaller than the sum of its proper divisors (2087274).

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

1299606 is a wasteful number, since it uses less digits than its factorization.

1299606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1299606 is about 1140.0026315759. The cubic root of 1299606 is about 109.1282613255.

The spelling of 1299606 in words is "one million, two hundred ninety-nine thousand, six hundred six".