668154882 has 8 divisors (see below), whose sum is σ = 1336309776. Its totient is φ = 222718292.

The previous prime is 668154857. The next prime is 668154947. The reversal of 668154882 is 288451866.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

668154882 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55679568 + ... + 55679579.

It is an arithmetic number, because the mean of its divisors is an integer number (167038722).

Almost surely, 2^668154882 is an apocalyptic number.

668154882 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

668154882 is a wasteful number, since it uses less digits than its factorization.

668154882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111359152.

The product of its digits is 737280, while the sum is 48.

The square root of 668154882 is about 25848.6920752289. The cubic root of 668154882 is about 874.2300195583.

The spelling of 668154882 in words is "six hundred sixty-eight million, one hundred fifty-four thousand, eight hundred eighty-two".