1662066376 has 16 divisors (see below), whose sum is σ = 3143954700. Its totient is φ = 823678464.

The previous prime is 1662066361. The next prime is 1662066383. The reversal of 1662066376 is 6736602661.

It can be written as a sum of positive squares in 2 ways, for example, as 1626186276 + 35880100 = 40326^2 + 5990^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 918381 + ... + 920188.

Almost surely, 2^1662066376 is an apocalyptic number.

It is an amenable number.

1662066376 is a deficient number, since it is larger than the sum of its proper divisors (1481888324).

1662066376 is a wasteful number, since it uses less digits than its factorization.

1662066376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838688 (or 1838684 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 1662066376 is about 40768.4482903139. The cubic root of 1662066376 is about 1184.5392467718.

The spelling of 1662066376 in words is "one billion, six hundred sixty-two million, sixty-six thousand, three hundred seventy-six".