66747068 has 6 divisors (see below), whose sum is σ = 116807376. Its totient is φ = 33373532.

The previous prime is 66747053. The next prime is 66747073. The reversal of 66747068 is 86074766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8343380 + ... + 8343387.

It is an arithmetic number, because the mean of its divisors is an integer number (19467896).

Almost surely, 2^66747068 is an apocalyptic number.

It is an amenable number.

66747068 is a deficient number, since it is larger than the sum of its proper divisors (50060308).

66747068 is a wasteful number, since it uses less digits than its factorization.

66747068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16686771 (or 16686769 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 66747068 is about 8169.8878817276. The cubic root of 66747068 is about 405.6430732694.

The spelling of 66747068 in words is "sixty-six million, seven hundred forty-seven thousand, sixty-eight".