66277516 has 12 divisors (see below), whose sum is σ = 116051040. Its totient is φ = 33120080.

The previous prime is 66277493. The next prime is 66277517. The reversal of 66277516 is 61577266.

It is a happy number.

66277516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66277517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6045 + ... + 13003.

It is an arithmetic number, because the mean of its divisors is an integer number (9670920).

Almost surely, 2^66277516 is an apocalyptic number.

It is an amenable number.

66277516 is a deficient number, since it is larger than the sum of its proper divisors (49773524).

66277516 is a wasteful number, since it uses less digits than its factorization.

66277516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9344 (or 9342 counting only the distinct ones).

The product of its digits is 105840, while the sum is 40.

The square root of 66277516 is about 8141.1004170198. The cubic root of 66277516 is about 404.6896285900.

The spelling of 66277516 in words is "sixty-six million, two hundred seventy-seven thousand, five hundred sixteen".