166147740 has 192 divisors, whose sum is σ = 572382720. Its totient is φ = 39674880.

The previous prime is 166147733. The next prime is 166147753. The reversal of 166147740 is 47741661.

166147740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 166147695 and 166147704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 492852 + ... + 493188.

It is an arithmetic number, because the mean of its divisors is an integer number (2981160).

Almost surely, 2^166147740 is an apocalyptic number.

166147740 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 166147740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286191360).

166147740 is an abundant number, since it is smaller than the sum of its proper divisors (406234980).

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

166147740 is a wasteful number, since it uses less digits than its factorization.

166147740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 166147740 is about 12889.8308755391. The cubic root of 166147740 is about 549.7494616486.

The spelling of 166147740 in words is "one hundred sixty-six million, one hundred forty-seven thousand, seven hundred forty".