1446642666 has 48 divisors (see below), whose sum is σ = 3714844224. Its totient is φ = 413325504.

The previous prime is 1446642623. The next prime is 1446642667. The reversal of 1446642666 is 6662466441.

It is not an unprimeable number, because it can be changed into a prime (1446642667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209215 + ... + 216018.

It is an arithmetic number, because the mean of its divisors is an integer number (77392588).

Almost surely, 2^1446642666 is an apocalyptic number.

1446642666 is an abundant number, since it is smaller than the sum of its proper divisors (2268201558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1446642666 is an equidigital number, since it uses as much as digits as its factorization.

1446642666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425257 (or 425245 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The square root of 1446642666 is about 38034.7560265608. The cubic root of 1446642666 is about 1130.9769570832.

The spelling of 1446642666 in words is "one billion, four hundred forty-six million, six hundred forty-two thousand, six hundred sixty-six".