168351677 has 4 divisors (see below), whose sum is σ = 181301820. Its totient is φ = 155401536.

The previous prime is 168351653. The next prime is 168351679. The reversal of 168351677 is 776153861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 776153861 = 7 ⋅110879123.

It can be written as a sum of positive squares in 2 ways, for example, as 53304601 + 115047076 = 7301^2 + 10726^2 .

It is a cyclic number.

It is not a de Polignac number, because 168351677 - 2¹⁰ = 168350653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168351679) 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, 6475052 + ... + 6475077.

It is an arithmetic number, because the mean of its divisors is an integer number (45325455).

Almost surely, 2^168351677 is an apocalyptic number.

It is an amenable number.

168351677 is a deficient number, since it is larger than the sum of its proper divisors (12950143).

168351677 is a wasteful number, since it uses less digits than its factorization.

168351677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12950142.

The product of its digits is 211680, while the sum is 44.

The square root of 168351677 is about 12975.0405394357. The cubic root of 168351677 is about 552.1695868439.

The spelling of 168351677 in words is "one hundred sixty-eight million, three hundred fifty-one thousand, six hundred seventy-seven".