3136621 has 4 divisors (see below), whose sum is σ = 3144700. Its totient is φ = 3128544.

The previous prime is 3136607. The next prime is 3136631. The reversal of 3136621 is 1266313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1266313 = 17 ⋅74489.

It can be written as a sum of positive squares in 2 ways, for example, as 2924100 + 212521 = 1710^2 + 461^2 .

It is a cyclic number.

It is not a de Polignac number, because 3136621 - 2⁵ = 3136589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3136592 and 3136601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3136631) 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, 3426 + ... + 4243.

It is an arithmetic number, because the mean of its divisors is an integer number (786175).

Almost surely, 2^3136621 is an apocalyptic number.

It is an amenable number.

3136621 is a deficient number, since it is larger than the sum of its proper divisors (8079).

3136621 is an equidigital number, since it uses as much as digits as its factorization.

3136621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8078.

The product of its digits is 648, while the sum is 22.

The square root of 3136621 is about 1771.0508180174. The cubic root of 3136621 is about 146.3818894505.

The spelling of 3136621 in words is "three million, one hundred thirty-six thousand, six hundred twenty-one".