166255716 has 96 divisors (see below), whose sum is σ = 458777088. Its totient is φ = 46287360.

The previous prime is 166255711. The next prime is 166255721. The reversal of 166255716 is 617552661.

166255716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166255711) and next prime (166255721).

It is not an unprimeable number, because it can be changed into a prime (166255711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95631 + ... + 97353.

It is an arithmetic number, because the mean of its divisors is an integer number (4778928).

Almost surely, 2^166255716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166255716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229388544).

166255716 is an abundant number, since it is smaller than the sum of its proper divisors (292521372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166255716 is a wasteful number, since it uses less digits than its factorization.

166255716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801 (or 1799 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 166255716 is about 12894.0186132951. The cubic root of 166255716 is about 549.8685261503.

The spelling of 166255716 in words is "one hundred sixty-six million, two hundred fifty-five thousand, seven hundred sixteen".