100621636 has 12 divisors (see below), whose sum is σ = 176188012. Its totient is φ = 50282208.

The previous prime is 100621621. The next prime is 100621643. The reversal of 100621636 is 636126001.

It can be written as a sum of positive squares in 2 ways, for example, as 50495236 + 50126400 = 7106^2 + 7080^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 100621636.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086 + ... + 14338.

Almost surely, 2^100621636 is an apocalyptic number.

It is an amenable number.

100621636 is a deficient number, since it is larger than the sum of its proper divisors (75566376).

100621636 is a wasteful number, since it uses less digits than its factorization.

100621636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14310 (or 14308 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 100621636 is about 10031.0336456419. The cubic root of 100621636 is about 465.1186901707.

Adding to 100621636 its reverse (636126001), we get a palindrome (736747637).

The spelling of 100621636 in words is "one hundred million, six hundred twenty-one thousand, six hundred thirty-six".