66208968 has 64 divisors (see below), whose sum is σ = 210192000. Its totient is φ = 18916416.

The previous prime is 66208957. The next prime is 66208979. The reversal of 66208968 is 86980266.

It is an interprime number because it is at equal distance from previous prime (66208957) and next prime (66208979).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20383 + ... + 23406.

It is an arithmetic number, because the mean of its divisors is an integer number (3284250).

Almost surely, 2^66208968 is an apocalyptic number.

It is an amenable number.

66208968 is an abundant number, since it is smaller than the sum of its proper divisors (143983032).

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

66208968 is a wasteful number, since it uses less digits than its factorization.

66208968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43811 (or 43801 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 66208968 is about 8136.8893319253. The cubic root of 66208968 is about 404.5500627388.

It can be divided in two parts, 66208 and 968, that added together give a palindrome (67176).

The spelling of 66208968 in words is "sixty-six million, two hundred eight thousand, nine hundred sixty-eight".