166260534 has 64 divisors (see below), whose sum is σ = 371036160. Its totient is φ = 49658400.

The previous prime is 166260503. The next prime is 166260553. The reversal of 166260534 is 435062661.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 166260495 and 166260504.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 870379 + ... + 870569.

It is an arithmetic number, because the mean of its divisors is an integer number (5797440).

Almost surely, 2^166260534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166260534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185518080).

166260534 is an abundant number, since it is smaller than the sum of its proper divisors (204775626).

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

166260534 is a wasteful number, since it uses less digits than its factorization.

166260534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 166260534 is about 12894.2054427561. The cubic root of 166260534 is about 549.8738377290.

The spelling of 166260534 in words is "one hundred sixty-six million, two hundred sixty thousand, five hundred thirty-four".