66660350 has 24 divisors (see below), whose sum is σ = 124314960. Its totient is φ = 26593920.

The previous prime is 66660343. The next prime is 66660353. The reversal of 66660350 is 5306666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66660353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20111 + ... + 23189.

It is an arithmetic number, because the mean of its divisors is an integer number (5179790).

Almost surely, 2^66660350 is an apocalyptic number.

66660350 is a deficient number, since it is larger than the sum of its proper divisors (57654610).

66660350 is a wasteful number, since it uses less digits than its factorization.

66660350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3524 (or 3519 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 66660350 is about 8164.5789848589. The cubic root of 66660350 is about 405.4673262195.

It can be divided in two parts, 666 and 60350, that added together give a palindrome (61016).

The spelling of 66660350 in words is "sixty-six million, six hundred sixty thousand, three hundred fifty".