66468654 has 32 divisors (see below), whose sum is σ = 168810240. Its totient is φ = 18990936.

The previous prime is 66468653. The next prime is 66468683. The reversal of 66468654 is 45686466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66468653) 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 in 15 ways as a sum of consecutive naturals, for example, 87544 + ... + 88299.

It is an arithmetic number, because the mean of its divisors is an integer number (5275320).

Almost surely, 2^66468654 is an apocalyptic number.

66468654 is an abundant number, since it is smaller than the sum of its proper divisors (102341586).

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

66468654 is a wasteful number, since it uses less digits than its factorization.

66468654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175861 (or 175855 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 66468654 is about 8152.8310420369. The cubic root of 66468654 is about 405.0782839070.

The spelling of 66468654 in words is "sixty-six million, four hundred sixty-eight thousand, six hundred fifty-four".