166216410 has 24 divisors (see below), whose sum is σ = 432162900. Its totient is φ = 44324352.

The previous prime is 166216367. The next prime is 166216411. The reversal of 166216410 is 14612661.

166216410 is a `hidden beast` number, since 16 + 6 + 2 + 1 + 641 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 156275001 + 9941409 = 12501^2 + 3153^2 .

It is not an unprimeable number, because it can be changed into a prime (166216411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 923335 + ... + 923514.

Almost surely, 2^166216410 is an apocalyptic number.

166216410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166216410 is an abundant number, since it is smaller than the sum of its proper divisors (265946490).

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

166216410 is a wasteful number, since it uses less digits than its factorization.

166216410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846862 (or 1846859 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 166216410 is about 12892.4943280965. The cubic root of 166216410 is about 549.8251896237.

The spelling of 166216410 in words is "one hundred sixty-six million, two hundred sixteen thousand, four hundred ten".