166061560 has 64 divisors (see below), whose sum is σ = 428613120. Its totient is φ = 56722560.

The previous prime is 166061557. The next prime is 166061563. The reversal of 166061560 is 65160661.

It is an interprime number because it is at equal distance from previous prime (166061557) and next prime (166061563).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166061563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86127 + ... + 88033.

It is an arithmetic number, because the mean of its divisors is an integer number (6697080).

Almost surely, 2^166061560 is an apocalyptic number.

166061560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166061560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214306560).

166061560 is an abundant number, since it is smaller than the sum of its proper divisors (262551560).

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

166061560 is a wasteful number, since it uses less digits than its factorization.

166061560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236 (or 2232 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 166061560 is about 12886.4874965989. The cubic root of 166061560 is about 549.6543944463.

The spelling of 166061560 in words is "one hundred sixty-six million, sixty-one thousand, five hundred sixty".