5821636 has 6 divisors (see below), whose sum is σ = 10187870. Its totient is φ = 2910816.

The previous prime is 5821603. The next prime is 5821637. The reversal of 5821636 is 6361285.

It can be written as a sum of positive squares in only one way, i.e., 3261636 + 2560000 = 1806^2 + 1600^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5821598 and 5821607.

It is not an unprimeable number, because it can be changed into a prime (5821637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727701 + ... + 727708.

Almost surely, 2^5821636 is an apocalyptic number.

It is an amenable number.

5821636 is a deficient number, since it is larger than the sum of its proper divisors (4366234).

5821636 is a wasteful number, since it uses less digits than its factorization.

5821636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455413 (or 1455411 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 5821636 is about 2412.8066644470. The cubic root of 5821636 is about 179.8933112621.

It can be divided in two parts, 582163 and 6, that added together give a square (582169 = 763²).

The spelling of 5821636 in words is "five million, eight hundred twenty-one thousand, six hundred thirty-six".