66375028 has 12 divisors (see below), whose sum is σ = 116465440. Its totient is φ = 33099192.

The previous prime is 66375019. The next prime is 66375073. The reversal of 66375028 is 82057366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20376 + ... + 23407.

Almost surely, 2^66375028 is an apocalyptic number.

It is an amenable number.

66375028 is a deficient number, since it is larger than the sum of its proper divisors (50090412).

66375028 is a wasteful number, since it uses less digits than its factorization.

66375028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44166 (or 44164 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 66375028 is about 8147.0870868059. The cubic root of 66375028 is about 404.8880003262. Note that the first 3 decimals are identical.

The spelling of 66375028 in words is "sixty-six million, three hundred seventy-five thousand, twenty-eight".