66073536 has 56 divisors (see below), whose sum is σ = 194249040. Its totient is φ = 22023936.

The previous prime is 66073489. The next prime is 66073537. The reversal of 66073536 is 63537066.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 66073536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66073537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17391 + ... + 20846.

Almost surely, 2^66073536 is an apocalyptic number.

It is an amenable number.

66073536 is an abundant number, since it is smaller than the sum of its proper divisors (128175504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66073536 is a wasteful number, since it uses less digits than its factorization.

66073536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38258 (or 38242 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The square root of 66073536 is about 8128.5629726293. The cubic root of 66073536 is about 404.2740355596.

The spelling of 66073536 in words is "sixty-six million, seventy-three thousand, five hundred thirty-six".