1666700353 has 2 divisors, whose sum is σ = 1666700354. Its totient is φ = 1666700352.

The previous prime is 1666700333. The next prime is 1666700407. The reversal of 1666700353 is 3530076661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1521546049 + 145154304 = 39007^2 + 12048^2 .

It is a cyclic number.

It is not a de Polignac number, because 1666700353 - 2¹³ = 1666692161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1666700333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833350176 + 833350177.

It is an arithmetic number, because the mean of its divisors is an integer number (833350177).

Almost surely, 2^1666700353 is an apocalyptic number.

It is an amenable number.

1666700353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1666700353 is an equidigital number, since it uses as much as digits as its factorization.

1666700353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 1666700353 is about 40825.2416159415. The cubic root of 1666700353 is about 1185.6390893558.

The spelling of 1666700353 in words is "one billion, six hundred sixty-six million, seven hundred thousand, three hundred fifty-three".