66664362 has 16 divisors (see below), whose sum is σ = 136429920. Its totient is φ = 21704592.

The previous prime is 66664357. The next prime is 66664391. The reversal of 66664362 is 26346666.

It is a self number, because there is not a number n which added to its sum of digits gives 66664362.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 128937 + ... + 129452.

It is an arithmetic number, because the mean of its divisors is an integer number (8526870).

Almost surely, 2^66664362 is an apocalyptic number.

66664362 is an abundant number, since it is smaller than the sum of its proper divisors (69765558).

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

66664362 is a wasteful number, since it uses less digits than its factorization.

66664362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258437.

The product of its digits is 186624, while the sum is 39.

The square root of 66664362 is about 8164.8246766235. The cubic root of 66664362 is about 405.4754605017.

It can be divided in two parts, 6666 and 4362, that multiplied together give a palindrome (29077092).

The spelling of 66664362 in words is "sixty-six million, six hundred sixty-four thousand, three hundred sixty-two".