100663636 has 6 divisors (see below), whose sum is σ = 176161370. Its totient is φ = 50331816.

The previous prime is 100663621. The next prime is 100663649. The reversal of 100663636 is 636366001.

It can be written as a sum of positive squares in only one way, i.e., 72148036 + 28515600 = 8494^2 + 5340^2 .

It is a super-2 number, since 2×100663636² = 20266335225480992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100663598 and 100663607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12582951 + ... + 12582958.

Almost surely, 2^100663636 is an apocalyptic number.

It is an amenable number.

100663636 is a deficient number, since it is larger than the sum of its proper divisors (75497734).

100663636 is a wasteful number, since it uses less digits than its factorization.

100663636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25165913 (or 25165911 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 100663636 is about 10033.1269303244. The cubic root of 100663636 is about 465.1833954978.

The spelling of 100663636 in words is "one hundred million, six hundred sixty-three thousand, six hundred thirty-six".