66543364 has 6 divisors (see below), whose sum is σ = 116450894. Its totient is φ = 33271680.

The previous prime is 66543349. The next prime is 66543397. The reversal of 66543364 is 46334566.

It can be written as a sum of positive squares in only one way, i.e., 40960000 + 25583364 = 6400^2 + 5058^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8317917 + ... + 8317924.

Almost surely, 2^66543364 is an apocalyptic number.

It is an amenable number.

66543364 is a deficient number, since it is larger than the sum of its proper divisors (49907530).

66543364 is a wasteful number, since it uses less digits than its factorization.

66543364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16635845 (or 16635843 counting only the distinct ones).

The product of its digits is 155520, while the sum is 37.

The square root of 66543364 is about 8157.4115992758. The cubic root of 66543364 is about 405.2299948528.

The spelling of 66543364 in words is "sixty-six million, five hundred forty-three thousand, three hundred sixty-four".