66036436 has 12 divisors (see below), whose sum is σ = 116755828. Its totient is φ = 32677632.

The previous prime is 66036403. The next prime is 66036437. The reversal of 66036436 is 63463066.

It can be written as a sum of positive squares in 2 ways, for example, as 48024900 + 18011536 = 6930^2 + 4244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66036437) 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, 84711 + ... + 85486.

Almost surely, 2^66036436 is an apocalyptic number.

It is an amenable number.

66036436 is a deficient number, since it is larger than the sum of its proper divisors (50719392).

66036436 is a wasteful number, since it uses less digits than its factorization.

66036436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170298 (or 170296 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 34.

The square root of 66036436 is about 8126.2805760077. The cubic root of 66036436 is about 404.1983553619.

The spelling of 66036436 in words is "sixty-six million, thirty-six thousand, four hundred thirty-six".