66577852 has 24 divisors (see below), whose sum is σ = 131488560. Its totient is φ = 29218560.

The previous prime is 66577829. The next prime is 66577867. The reversal of 66577852 is 25877566.

It is a super-2 number, since 2×66577852² = 8865220753867808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24813 + ... + 27364.

It is an arithmetic number, because the mean of its divisors is an integer number (5478690).

Almost surely, 2^66577852 is an apocalyptic number.

It is an amenable number.

66577852 is a deficient number, since it is larger than the sum of its proper divisors (64910708).

66577852 is a wasteful number, since it uses less digits than its factorization.

66577852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52221 (or 52219 counting only the distinct ones).

The product of its digits is 705600, while the sum is 46.

The square root of 66577852 is about 8159.5252312864. The cubic root of 66577852 is about 405.2999901036.

The spelling of 66577852 in words is "sixty-six million, five hundred seventy-seven thousand, eight hundred fifty-two".