1668235704 has 32 divisors (see below), whose sum is σ = 4415919120. Its totient is φ = 523367936.

The previous prime is 1668235693. The next prime is 1668235727. The reversal of 1668235704 is 4075328661.

1668235704 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 2043999 + ... + 2044814.

Almost surely, 2^1668235704 is an apocalyptic number.

It is an amenable number.

1668235704 is an abundant number, since it is smaller than the sum of its proper divisors (2747683416).

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

1668235704 is a wasteful number, since it uses less digits than its factorization.

1668235704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088839 (or 4088835 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 1668235704 is about 40844.0412300252. The cubic root of 1668235704 is about 1186.0030446949.

The spelling of 1668235704 in words is "one billion, six hundred sixty-eight million, two hundred thirty-five thousand, seven hundred four".