66745052 has 36 divisors (see below), whose sum is σ = 129148320. Its totient is φ = 30159360.

The previous prime is 66745033. The next prime is 66745069. The reversal of 66745052 is 25054766.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115388 + ... + 115964.

Almost surely, 2^66745052 is an apocalyptic number.

It is an amenable number.

66745052 is a deficient number, since it is larger than the sum of its proper divisors (62403268).

66745052 is a wasteful number, since it uses less digits than its factorization.

66745052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 66745052 is about 8169.7645008899. The cubic root of 66745052 is about 405.6389892714.

The spelling of 66745052 in words is "sixty-six million, seven hundred forty-five thousand, fifty-two".