668903362 has 4 divisors (see below), whose sum is σ = 1003355046. Its totient is φ = 334451680.

The previous prime is 668903329. The next prime is 668903377. The reversal of 668903362 is 263309866.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 582208641 + 86694721 = 24129^2 + 9311^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167225839 + ... + 167225842.

Almost surely, 2^668903362 is an apocalyptic number.

668903362 is a deficient number, since it is larger than the sum of its proper divisors (334451684).

668903362 is a wasteful number, since it uses less digits than its factorization.

668903362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334451683.

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 668903362 is about 25863.1661248193. The cubic root of 668903362 is about 874.5563408542.

The spelling of 668903362 in words is "six hundred sixty-eight million, nine hundred three thousand, three hundred sixty-two".