66888492 has 24 divisors (see below), whose sum is σ = 170261952. Its totient is φ = 20269200.

The previous prime is 66888457. The next prime is 66888511. The reversal of 66888492 is 29488866.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253234 + ... + 253497.

It is an arithmetic number, because the mean of its divisors is an integer number (7094248).

Almost surely, 2^66888492 is an apocalyptic number.

It is an amenable number.

66888492 is an abundant number, since it is smaller than the sum of its proper divisors (103373460).

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

66888492 is a wasteful number, since it uses less digits than its factorization.

66888492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506749 (or 506747 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The square root of 66888492 is about 8178.5385002456. The cubic root of 66888492 is about 405.9293639804.

The spelling of 66888492 in words is "sixty-six million, eight hundred eighty-eight thousand, four hundred ninety-two".