166396080 has 40 divisors (see below), whose sum is σ = 515828592. Its totient is φ = 44372224.

The previous prime is 166396079. The next prime is 166396093. The reversal of 166396080 is 80693661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346419 + ... + 346898.

Almost surely, 2^166396080 is an apocalyptic number.

166396080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166396080 is an abundant number, since it is smaller than the sum of its proper divisors (349432512).

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

166396080 is a wasteful number, since it uses less digits than its factorization.

166396080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693333 (or 693327 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 166396080 is about 12899.4604538329. The cubic root of 166396080 is about 550.0232276692.

The spelling of 166396080 in words is "one hundred sixty-six million, three hundred ninety-six thousand, eighty".