1662660446 has 16 divisors (see below), whose sum is σ = 2562611568. Its totient is φ = 808617600.

The previous prime is 1662660443. The next prime is 1662660457. The reversal of 1662660446 is 6440662661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662660443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19385 + ... + 60836.

It is an arithmetic number, because the mean of its divisors is an integer number (160163223).

Almost surely, 2^1662660446 is an apocalyptic number.

1662660446 is a deficient number, since it is larger than the sum of its proper divisors (899951122).

1662660446 is a wasteful number, since it uses less digits than its factorization.

1662660446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80507.

The product of its (nonzero) digits is 248832, while the sum is 41.

The square root of 1662660446 is about 40775.7335433711. The cubic root of 1662660446 is about 1184.6803593483.

The spelling of 1662660446 in words is "one billion, six hundred sixty-two million, six hundred sixty thousand, four hundred forty-six".