1666714450 has 12 divisors (see below), whose sum is σ = 3100088970. Its totient is φ = 666685760.

The previous prime is 1666714417. The next prime is 1666714453. The reversal of 1666714450 is 544176661.

It can be written as a sum of positive squares in 3 ways, for example, as 1261457289 + 405257161 = 35517^2 + 20131^2 .

It is not an unprimeable number, because it can be changed into a prime (1666714453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16667095 + ... + 16667194.

Almost surely, 2^1666714450 is an apocalyptic number.

1666714450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1666714450 is a deficient number, since it is larger than the sum of its proper divisors (1433374520).

1666714450 is a wasteful number, since it uses less digits than its factorization.

1666714450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33334301 (or 33334296 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1666714450 is about 40825.4142661161. The cubic root of 1666714450 is about 1185.6424320696.

The spelling of 1666714450 in words is "one billion, six hundred sixty-six million, seven hundred fourteen thousand, four hundred fifty".