66057308 has 18 divisors (see below), whose sum is σ = 122802456. Its totient is φ = 31085248.

The previous prime is 66057307. The next prime is 66057317. The reversal of 66057308 is 80375066.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66057307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27416 + ... + 29727.

Almost surely, 2^66057308 is an apocalyptic number.

66057308 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

66057308 is a deficient number, since it is larger than the sum of its proper divisors (56745148).

66057308 is a wasteful number, since it uses less digits than its factorization.

66057308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57181 (or 57162 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66057308 is about 8127.5647029107. The cubic root of 66057308 is about 404.2409355894.

The spelling of 66057308 in words is "sixty-six million, fifty-seven thousand, three hundred eight".