166522650 has 192 divisors, whose sum is σ = 527109120. Its totient is φ = 33868800.

The previous prime is 166522637. The next prime is 166522673. The reversal of 166522650 is 56225661.

It is a happy 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 95 ways as a sum of consecutive naturals, for example, 338905 + ... + 339395.

It is an arithmetic number, because the mean of its divisors is an integer number (2745360).

Almost surely, 2^166522650 is an apocalyptic number.

166522650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166522650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263554560).

166522650 is an abundant number, since it is smaller than the sum of its proper divisors (360586470).

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

166522650 is a wasteful number, since it uses less digits than its factorization.

166522650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 166522650 is about 12904.3655403898. The cubic root of 166522650 is about 550.1626516188.

The spelling of 166522650 in words is "one hundred sixty-six million, five hundred twenty-two thousand, six hundred fifty".