66200644 has 12 divisors (see below), whose sum is σ = 116499600. Its totient is φ = 32915048.

The previous prime is 66200639. The next prime is 66200653. The reversal of 66200644 is 44600266.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45514 + ... + 46945.

It is an arithmetic number, because the mean of its divisors is an integer number (9708300).

Almost surely, 2^66200644 is an apocalyptic number.

It is an amenable number.

66200644 is a deficient number, since it is larger than the sum of its proper divisors (50298956).

66200644 is a wasteful number, since it uses less digits than its factorization.

66200644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92642 (or 92640 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 66200644 is about 8136.3778181695. The cubic root of 66200644 is about 404.5331082589.

The spelling of 66200644 in words is "sixty-six million, two hundred thousand, six hundred forty-four".