166522616 has 64 divisors (see below), whose sum is σ = 360067680. Its totient is φ = 71516160.

The previous prime is 166522613. The next prime is 166522627. The reversal of 166522616 is 616225661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166522613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171011 + ... + 171981.

Almost surely, 2^166522616 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 166522616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180033840).

166522616 is an abundant number, since it is smaller than the sum of its proper divisors (193545064).

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

166522616 is a wasteful number, since it uses less digits than its factorization.

166522616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 1100 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 166522616 is about 12904.3642230061. The cubic root of 166522616 is about 550.1626141754.

The spelling of 166522616 in words is "one hundred sixty-six million, five hundred twenty-two thousand, six hundred sixteen".