66316288 has 24 divisors (see below), whose sum is σ = 132604290. Its totient is φ = 33157120.

The previous prime is 66316267. The next prime is 66316309. The reversal of 66316288 is 88261366.

It is an interprime number because it is at equal distance from previous prime (66316267) and next prime (66316309).

It can be written as a sum of positive squares in only one way, i.e., 53699584 + 12616704 = 7328^2 + 3552^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66316288.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14143 + ... + 18238.

Almost surely, 2^66316288 is an apocalyptic number.

It is an amenable number.

66316288 is a deficient number, since it is larger than the sum of its proper divisors (66288002).

66316288 is an equidigital number, since it uses as much as digits as its factorization.

66316288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32403 (or 32383 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 66316288 is about 8143.4813194358. The cubic root of 66316288 is about 404.7685269786.

The spelling of 66316288 in words is "sixty-six million, three hundred sixteen thousand, two hundred eighty-eight".