1236601 has 4 divisors (see below), whose sum is σ = 1266804. Its totient is φ = 1206400.

The previous prime is 1236583. The next prime is 1236611. The reversal of 1236601 is 1066321.

1236601 = 80² + 81² + ... + 161².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1066321 = 97 ⋅10993.

It can be written as a sum of positive squares in 2 ways, for example, as 469225 + 767376 = 685^2 + 876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1236601 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1236611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15040 + ... + 15121.

It is an arithmetic number, because the mean of its divisors is an integer number (316701).

2^1236601 is an apocalyptic number.

It is an amenable number.

1236601 is a deficient number, since it is larger than the sum of its proper divisors (30203).

1236601 is an equidigital number, since it uses as much as digits as its factorization.

1236601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30202.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1236601 is about 1112.0256292011. The cubic root of 1236601 is about 107.3354540515.

It can be divided in two parts, 123 and 6601, that added together give a square (6724 = 82²).

The spelling of 1236601 in words is "one million, two hundred thirty-six thousand, six hundred one".