66289528 has 16 divisors (see below), whose sum is σ = 131604480. Its totient is φ = 31195008.

The previous prime is 66289523. The next prime is 66289541. The reversal of 66289528 is 82598266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66289523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243576 + ... + 243847.

It is an arithmetic number, because the mean of its divisors is an integer number (8225280).

Almost surely, 2^66289528 is an apocalyptic number.

66289528 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

66289528 is a deficient number, since it is larger than the sum of its proper divisors (65314952).

66289528 is a wasteful number, since it uses less digits than its factorization.

66289528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487446 (or 487442 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 66289528 is about 8141.8381217020. The cubic root of 66289528 is about 404.7140754838.

The spelling of 66289528 in words is "sixty-six million, two hundred eighty-nine thousand, five hundred twenty-eight".