166220896 has 12 divisors (see below), whose sum is σ = 327247452. Its totient is φ = 83110432.

The previous prime is 166220893. The next prime is 166220897. The reversal of 166220896 is 698022661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166220891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2597170 + ... + 2597233.

It is an arithmetic number, because the mean of its divisors is an integer number (27270621).

Almost surely, 2^166220896 is an apocalyptic number.

166220896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166220896 is a deficient number, since it is larger than the sum of its proper divisors (161026556).

166220896 is an equidigital number, since it uses as much as digits as its factorization.

166220896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194413 (or 5194405 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 166220896 is about 12892.6683041177. The cubic root of 166220896 is about 549.8301359737.

The spelling of 166220896 in words is "one hundred sixty-six million, two hundred twenty thousand, eight hundred ninety-six".