5621636806 has 8 divisors (see below), whose sum is σ = 8928482040. Its totient is φ = 2645476128.

The previous prime is 5621636767. The next prime is 5621636821. The reversal of 5621636806 is 6086361265.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82671096 + ... + 82671163.

It is an arithmetic number, because the mean of its divisors is an integer number (1116060255).

Almost surely, 2^5621636806 is an apocalyptic number.

5621636806 is a deficient number, since it is larger than the sum of its proper divisors (3306845234).

5621636806 is a wasteful number, since it uses less digits than its factorization.

5621636806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165342278.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 5621636806 is about 74977.5753542351. The cubic root of 5621636806 is about 1778.0921364777.

The spelling of 5621636806 in words is "five billion, six hundred twenty-one million, six hundred thirty-six thousand, eight hundred six".