168368506 has 8 divisors (see below), whose sum is σ = 253485504. Its totient is φ = 83873340.

The previous prime is 168368503. The next prime is 168368507. The reversal of 168368506 is 605863861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (168368503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154780 + ... + 155863.

It is an arithmetic number, because the mean of its divisors is an integer number (31685688).

Almost surely, 2^168368506 is an apocalyptic number.

168368506 is a deficient number, since it is larger than the sum of its proper divisors (85116998).

168368506 is a wasteful number, since it uses less digits than its factorization.

168368506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310916.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 168368506 is about 12975.6890375810. The cubic root of 168368506 is about 552.1879851407.

The spelling of 168368506 in words is "one hundred sixty-eight million, three hundred sixty-eight thousand, five hundred six".