668148874 has 32 divisors (see below), whose sum is σ = 1043788032. Its totient is φ = 320544000.

The previous prime is 668148839. The next prime is 668148881. The reversal of 668148874 is 478841866.

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, 2377614 + ... + 2377894.

It is an arithmetic number, because the mean of its divisors is an integer number (32618376).

Almost surely, 2^668148874 is an apocalyptic number.

668148874 is a deficient number, since it is larger than the sum of its proper divisors (375639158).

668148874 is a wasteful number, since it uses less digits than its factorization.

668148874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702.

The product of its digits is 2064384, while the sum is 52.

The square root of 668148874 is about 25848.5758601901. The cubic root of 668148874 is about 874.2273992129.

It can be divided in two parts, 6681 and 48874, that added together give a palindrome (55555).

The spelling of 668148874 in words is "six hundred sixty-eight million, one hundred forty-eight thousand, eight hundred seventy-four".