66036416 has 56 divisors (see below), whose sum is σ = 136672320. Its totient is φ = 31629312.

The previous prime is 66036403. The next prime is 66036437. The reversal of 66036416 is 61463066.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186896 + ... + 187248.

Almost surely, 2^66036416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66036416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68336160).

66036416 is an abundant number, since it is smaller than the sum of its proper divisors (70635904).

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

66036416 is a wasteful number, since it uses less digits than its factorization.

66036416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66036416 is about 8126.2793454323. The cubic root of 66036416 is about 404.1983145563.

The spelling of 66036416 in words is "sixty-six million, thirty-six thousand, four hundred sixteen".