166315655 has 8 divisors (see below), whose sum is σ = 217722384. Its totient is φ = 120956800.

The previous prime is 166315577. The next prime is 166315661. The reversal of 166315655 is 556513661.

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

It is not a de Polignac number, because 166315655 - 2¹⁴ = 166299271 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1511906 + ... + 1512015.

It is an arithmetic number, because the mean of its divisors is an integer number (27215298).

Almost surely, 2^166315655 is an apocalyptic number.

166315655 is a deficient number, since it is larger than the sum of its proper divisors (51406729).

166315655 is a wasteful number, since it uses less digits than its factorization.

166315655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023937.

The product of its digits is 81000, while the sum is 38.

The square root of 166315655 is about 12896.3426986103. The cubic root of 166315655 is about 549.9345982839.

The spelling of 166315655 in words is "one hundred sixty-six million, three hundred fifteen thousand, six hundred fifty-five".