1668764412 has 36 divisors (see below), whose sum is σ = 4820875696. Its totient is φ = 476789760.

The previous prime is 1668764399. The next prime is 1668764459. The reversal of 1668764412 is 2144678661.

1668764412 is a `hidden beast` number, since 166 + 8 + 76 + 4 + 412 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3310789 + ... + 3311292.

Almost surely, 2^1668764412 is an apocalyptic number.

1668764412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1668764412 is an abundant number, since it is smaller than the sum of its proper divisors (3152111284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1668764412 is a wasteful number, since it uses less digits than its factorization.

1668764412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6622098 (or 6622093 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 1668764412 is about 40850.5129955549. The cubic root of 1668764412 is about 1186.1283233681.

The spelling of 1668764412 in words is "one billion, six hundred sixty-eight million, seven hundred sixty-four thousand, four hundred twelve".