166206340 has 24 divisors (see below), whose sum is σ = 349497792. Its totient is φ = 66394080.

The previous prime is 166206329. The next prime is 166206347. The reversal of 166206340 is 43602661.

It is a junction number, because it is equal to n+sod(n) for n = 166206299 and 166206308.

It is not an unprimeable number, because it can be changed into a prime (166206347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11097 + ... + 21343.

It is an arithmetic number, because the mean of its divisors is an integer number (14562408).

Almost surely, 2^166206340 is an apocalyptic number.

166206340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166206340 is an abundant number, since it is smaller than the sum of its proper divisors (183291452).

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

166206340 is a wasteful number, since it uses less digits than its factorization.

166206340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11067 (or 11065 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 166206340 is about 12892.1037848755. The cubic root of 166206340 is about 549.8140859237.

The spelling of 166206340 in words is "one hundred sixty-six million, two hundred six thousand, three hundred forty".