168405712 has 10 divisors (see below), whose sum is σ = 326286098. Its totient is φ = 84202848.

The previous prime is 168405709. The next prime is 168405761. The reversal of 168405712 is 217504861.

It can be written as a sum of positive squares in only one way, i.e., 147282496 + 21123216 = 12136^2 + 4596^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5262663 + ... + 5262694.

Almost surely, 2^168405712 is an apocalyptic number.

It is an amenable number.

168405712 is a deficient number, since it is larger than the sum of its proper divisors (157880386).

168405712 is a wasteful number, since it uses less digits than its factorization.

168405712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10525365 (or 10525359 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 168405712 is about 12977.1226394760. The cubic root of 168405712 is about 552.2286562328.

The spelling of 168405712 in words is "one hundred sixty-eight million, four hundred five thousand, seven hundred twelve".