1423310666 has 4 divisors (see below), whose sum is σ = 2134966002. Its totient is φ = 711655332.

The previous prime is 1423310641. The next prime is 1423310671. The reversal of 1423310666 is 6660133241.

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., 1411580041 + 11730625 = 37571^2 + 3425^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355827665 + ... + 355827668.

Almost surely, 2^1423310666 is an apocalyptic number.

1423310666 is a deficient number, since it is larger than the sum of its proper divisors (711655336).

1423310666 is an equidigital number, since it uses as much as digits as its factorization.

1423310666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711655335.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1423310666 is about 37726.7897653643. The cubic root of 1423310666 is about 1124.8636979887.

The spelling of 1423310666 in words is "one billion, four hundred twenty-three million, three hundred ten thousand, six hundred sixty-six".