66611152 has 20 divisors (see below), whose sum is σ = 130616640. Its totient is φ = 32903648.

The previous prime is 66611143. The next prime is 66611159. The reversal of 66611152 is 25111666.

It is a self number, because there is not a number n which added to its sum of digits gives 66611152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66611159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23752 + ... + 26407.

It is an arithmetic number, because the mean of its divisors is an integer number (6530832).

Almost surely, 2^66611152 is an apocalyptic number.

It is an amenable number.

66611152 is a deficient number, since it is larger than the sum of its proper divisors (64005488).

66611152 is a wasteful number, since it uses less digits than its factorization.

66611152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50250 (or 50244 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 66611152 is about 8161.5655360966. The cubic root of 66611152 is about 405.3675513106.

The spelling of 66611152 in words is "sixty-six million, six hundred eleven thousand, one hundred fifty-two".