66748036 has 6 divisors (see below), whose sum is σ = 116809070. Its totient is φ = 33374016.

The previous prime is 66747979. The next prime is 66748067. The reversal of 66748036 is 63084766.

It can be written as a sum of positive squares in only one way, i.e., 33570436 + 33177600 = 5794^2 + 5760^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66748036.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8343501 + ... + 8343508.

Almost surely, 2^66748036 is an apocalyptic number.

It is an amenable number.

66748036 is a deficient number, since it is larger than the sum of its proper divisors (50061034).

66748036 is a wasteful number, since it uses less digits than its factorization.

66748036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16687013 (or 16687011 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 66748036 is about 8169.9471234519. The cubic root of 66748036 is about 405.6450342074.

The spelling of 66748036 in words is "sixty-six million, seven hundred forty-eight thousand, thirty-six".