1686663332 has 12 divisors (see below), whose sum is σ = 2958512256. Its totient is φ = 841374120.

The previous prime is 1686663331. The next prime is 1686663353. The reversal of 1686663332 is 2333666861.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1686663331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487448 + ... + 490895.

It is an arithmetic number, because the mean of its divisors is an integer number (246542688).

Almost surely, 2^1686663332 is an apocalyptic number.

It is an amenable number.

1686663332 is a deficient number, since it is larger than the sum of its proper divisors (1271848924).

1686663332 is a wasteful number, since it uses less digits than its factorization.

1686663332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978778 (or 978776 counting only the distinct ones).

The product of its digits is 559872, while the sum is 44.

The square root of 1686663332 is about 41069.0069517148. The cubic root of 1686663332 is about 1190.3539967953.

The spelling of 1686663332 in words is "one billion, six hundred eighty-six million, six hundred sixty-three thousand, three hundred thirty-two".