668071432 has 32 divisors (see below), whose sum is σ = 1493827200. Its totient is φ = 273867264.

The previous prime is 668071429. The next prime is 668071499. The reversal of 668071432 is 234170866.

668071432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 668071391 and 668071400.

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, 258057 + ... + 260632.

It is an arithmetic number, because the mean of its divisors is an integer number (46682100).

Almost surely, 2^668071432 is an apocalyptic number.

It is an amenable number.

668071432 is an abundant number, since it is smaller than the sum of its proper divisors (825755768).

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

668071432 is a wasteful number, since it uses less digits than its factorization.

668071432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518725 (or 518721 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 668071432 is about 25847.0778232279. The cubic root of 668071432 is about 874.1936220431.

The spelling of 668071432 in words is "six hundred sixty-eight million, seventy-one thousand, four hundred thirty-two".