666668362 has 8 divisors (see below), whose sum is σ = 1058826276. Its totient is φ = 313726272.

The previous prime is 666668357. The next prime is 666668369. The reversal of 666668362 is 263866666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 641558241 + 25110121 = 25329^2 + 5011^2 .

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

It is not an unprimeable number, because it can be changed into a prime (666668369) 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, 9803913 + ... + 9803980.

Almost surely, 2^666668362 is an apocalyptic number.

666668362 is a deficient number, since it is larger than the sum of its proper divisors (392157914).

666668362 is a wasteful number, since it uses less digits than its factorization.

666668362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19607912.

The product of its digits is 2239488, while the sum is 49.

The square root of 666668362 is about 25819.9218046841. The cubic root of 666668362 is about 873.5812052407.

The spelling of 666668362 in words is "six hundred sixty-six million, six hundred sixty-eight thousand, three hundred sixty-two".