66360636 has 36 divisors (see below), whose sum is σ = 169415064. Its totient is φ = 21900000.

The previous prime is 66360629. The next prime is 66360649. The reversal of 66360636 is 63606366.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 66360636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5490 + ... + 12761.

It is an arithmetic number, because the mean of its divisors is an integer number (4705974).

Almost surely, 2^66360636 is an apocalyptic number.

It is an amenable number.

66360636 is an abundant number, since it is smaller than the sum of its proper divisors (103054428).

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

66360636 is a wasteful number, since it uses less digits than its factorization.

66360636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18362 (or 18357 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 36.

The square root of 66360636 is about 8146.2037784480. The cubic root of 66360636 is about 404.8587344538.

The spelling of 66360636 in words is "sixty-six million, three hundred sixty thousand, six hundred thirty-six".