168020817 has 8 divisors (see below), whose sum is σ = 228794496. Its totient is φ = 109630512.

The previous prime is 168020807. The next prime is 168020821. The reversal of 168020817 is 718020861.

It is a happy number.

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

It is not a de Polignac number, because 168020817 - 2¹⁸ = 167758673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168020807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595678 + ... + 595959.

It is an arithmetic number, because the mean of its divisors is an integer number (28599312).

Almost surely, 2^168020817 is an apocalyptic number.

It is an amenable number.

168020817 is a deficient number, since it is larger than the sum of its proper divisors (60773679).

168020817 is a wasteful number, since it uses less digits than its factorization.

168020817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191687.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 168020817 is about 12962.2844051502. The cubic root of 168020817 is about 551.8076250193.

The spelling of 168020817 in words is "one hundred sixty-eight million, twenty thousand, eight hundred seventeen".