166354340 has 24 divisors (see below), whose sum is σ = 350359800. Its totient is φ = 66348288.

The previous prime is 166354337. The next prime is 166354351. The reversal of 166354340 is 43453661.

It can be written as a sum of positive squares in 4 ways, for example, as 62599744 + 103754596 = 7912^2 + 10186^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166354297 and 166354306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4937 + ... + 18896.

It is an arithmetic number, because the mean of its divisors is an integer number (14598325).

Almost surely, 2^166354340 is an apocalyptic number.

166354340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166354340 is an abundant number, since it is smaller than the sum of its proper divisors (184005460).

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

166354340 is a wasteful number, since it uses less digits than its factorization.

166354340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24191 (or 24189 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 166354340 is about 12897.8424552326. The cubic root of 166354340 is about 549.9772332174.

The spelling of 166354340 in words is "one hundred sixty-six million, three hundred fifty-four thousand, three hundred forty".