668875258 has 8 divisors (see below), whose sum is σ = 1010972160. Its totient is φ = 331884540.

The previous prime is 668875253. The next prime is 668875261. The reversal of 668875258 is 852578866.

It is a happy number.

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

It is a super-2 number, since 2×668875258² = 894788221529133128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 668875199 and 668875208.

It is not an unprimeable number, because it can be changed into a prime (668875253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276218 + ... + 1276741.

It is an arithmetic number, because the mean of its divisors is an integer number (126371520).

Almost surely, 2^668875258 is an apocalyptic number.

668875258 is a deficient number, since it is larger than the sum of its proper divisors (342096902).

668875258 is a wasteful number, since it uses less digits than its factorization.

668875258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553092.

The product of its digits is 6451200, while the sum is 55.

The square root of 668875258 is about 25862.6227981618. The cubic root of 668875258 is about 874.5440925101.

The spelling of 668875258 in words is "six hundred sixty-eight million, eight hundred seventy-five thousand, two hundred fifty-eight".