1660523408 has 40 divisors (see below), whose sum is σ = 3266885400. Its totient is φ = 817496064.

The previous prime is 1660523321. The next prime is 1660523437. The reversal of 1660523408 is 8043250661.

It can be written as a sum of positive squares in 4 ways, for example, as 123904 + 1660399504 = 352^2 + 40748^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1177808 + ... + 1179216.

It is an arithmetic number, because the mean of its divisors is an integer number (81672135).

Almost surely, 2^1660523408 is an apocalyptic number.

It is an amenable number.

1660523408 is a deficient number, since it is larger than the sum of its proper divisors (1606361992).

1660523408 is a wasteful number, since it uses less digits than its factorization.

1660523408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 2493 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1660523408 is about 40749.5203407353. The cubic root of 1660523408 is about 1184.1725803036.

The spelling of 1660523408 in words is "one billion, six hundred sixty million, five hundred twenty-three thousand, four hundred eight".