168090655 has 8 divisors (see below), whose sum is σ = 206399952. Its totient is φ = 131345088.

The previous prime is 168090619. The next prime is 168090661. The reversal of 168090655 is 556090861.

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

It is a cyclic number.

It is not a de Polignac number, because 168090655 - 2¹¹ = 168088607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390694 + ... + 391123.

It is an arithmetic number, because the mean of its divisors is an integer number (25799994).

Almost surely, 2^168090655 is an apocalyptic number.

168090655 is a deficient number, since it is larger than the sum of its proper divisors (38309297).

168090655 is an equidigital number, since it uses as much as digits as its factorization.

168090655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781865.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 168090655 is about 12964.9780177214. The cubic root of 168090655 is about 551.8840675370.

The spelling of 168090655 in words is "one hundred sixty-eight million, ninety thousand, six hundred fifty-five".