668210914 has 32 divisors (see below), whose sum is σ = 1165432320. Its totient is φ = 281428992.

The previous prime is 668210911. The next prime is 668210929. The reversal of 668210914 is 419012866.

It is a happy number.

668210914 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (668210911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256402 + ... + 258994.

It is an arithmetic number, because the mean of its divisors is an integer number (36419760).

Almost surely, 2^668210914 is an apocalyptic number.

668210914 is a deficient number, since it is larger than the sum of its proper divisors (497221406).

668210914 is a wasteful number, since it uses less digits than its factorization.

668210914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 668210914 is about 25849.7758984483. The cubic root of 668210914 is about 874.2544567502.

It can be divided in two parts, 668210 and 914, that added together give a square (669124 = 818²).

The spelling of 668210914 in words is "six hundred sixty-eight million, two hundred ten thousand, nine hundred fourteen".