66666352 has 10 divisors (see below), whose sum is σ = 129166088. Its totient is φ = 33333168.

The previous prime is 66666343. The next prime is 66666359. The reversal of 66666352 is 25366666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66666359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2083308 + ... + 2083339.

Almost surely, 2^66666352 is an apocalyptic number.

It is an amenable number.

66666352 is a deficient number, since it is larger than the sum of its proper divisors (62499736).

66666352 is a wasteful number, since it uses less digits than its factorization.

66666352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166655 (or 4166649 counting only the distinct ones).

The product of its digits is 233280, while the sum is 40.

The square root of 66666352 is about 8164.9465399352. The cubic root of 66666352 is about 405.4794950818.

It can be divided in two parts, 66666 and 352, that multiplied together give a palindrome (23466432).

The spelling of 66666352 in words is "sixty-six million, six hundred sixty-six thousand, three hundred fifty-two".