43696636 has 12 divisors (see below), whose sum is σ = 77072128. Its totient is φ = 21676032.

The previous prime is 43696633. The next prime is 43696651. The reversal of 43696636 is 63669634.

It is a junction number, because it is equal to n+sod(n) for n = 43696592 and 43696601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43696633) 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, 42501 + ... + 43516.

Almost surely, 2^43696636 is an apocalyptic number.

It is an amenable number.

43696636 is a deficient number, since it is larger than the sum of its proper divisors (33375492).

43696636 is a wasteful number, since it uses less digits than its factorization.

43696636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86148 (or 86146 counting only the distinct ones).

The product of its digits is 419904, while the sum is 43.

The square root of 43696636 is about 6610.3431075853. The cubic root of 43696636 is about 352.2216127717.

The spelling of 43696636 in words is "forty-three million, six hundred ninety-six thousand, six hundred thirty-six".