66345950 has 48 divisors (see below), whose sum is σ = 136598400. Its totient is φ = 23772000.

The previous prime is 66345931. The next prime is 66345953. The reversal of 66345950 is 5954366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66345953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38201 + ... + 39899.

It is an arithmetic number, because the mean of its divisors is an integer number (2845800).

Almost surely, 2^66345950 is an apocalyptic number.

66345950 is an abundant number, since it is smaller than the sum of its proper divisors (70252450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66345950 is a wasteful number, since it uses less digits than its factorization.

66345950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793 (or 1788 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 66345950 is about 8145.3023271086. The cubic root of 66345950 is about 404.8288663753.

The spelling of 66345950 in words is "sixty-six million, three hundred forty-five thousand, nine hundred fifty".