168214857 has 4 divisors (see below), whose sum is σ = 224286480. Its totient is φ = 112143236.

The previous prime is 168214853. The next prime is 168214903. The reversal of 168214857 is 758412861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 168214857 - 2² = 168214853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168214853) 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, 28035807 + ... + 28035812.

It is an arithmetic number, because the mean of its divisors is an integer number (56071620).

Almost surely, 2^168214857 is an apocalyptic number.

It is an amenable number.

168214857 is a deficient number, since it is larger than the sum of its proper divisors (56071623).

168214857 is an equidigital number, since it uses as much as digits as its factorization.

168214857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56071622.

The product of its digits is 107520, while the sum is 42.

The square root of 168214857 is about 12969.7670372293. The cubic root of 168214857 is about 552.0199629149.

It can be divided in two parts, 168214 and 857, that added together give a triangular number (169071 = T₅₈₁).

The spelling of 168214857 in words is "one hundred sixty-eight million, two hundred fourteen thousand, eight hundred fifty-seven".