166897080 has 192 divisors, whose sum is σ = 626895360. Its totient is φ = 37718784.

The previous prime is 166897063. The next prime is 166897091. The reversal of 166897080 is 80798661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 259239 + ... + 259881.

It is an arithmetic number, because the mean of its divisors is an integer number (3265080).

Almost surely, 2^166897080 is an apocalyptic number.

166897080 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 166897080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313447680).

166897080 is an abundant number, since it is smaller than the sum of its proper divisors (459998280).

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

166897080 is a wasteful number, since it uses less digits than its factorization.

166897080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 166897080 is about 12918.8652752477. The cubic root of 166897080 is about 550.5746940598.

The spelling of 166897080 in words is "one hundred sixty-six million, eight hundred ninety-seven thousand, eighty".