166023798 has 32 divisors (see below), whose sum is σ = 349249536. Its totient is φ = 52512768.

The previous prime is 166023797. The next prime is 166023833. The reversal of 166023798 is 897320661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166023797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12790 + ... + 22262.

It is an arithmetic number, because the mean of its divisors is an integer number (10914048).

Almost surely, 2^166023798 is an apocalyptic number.

166023798 is an abundant number, since it is smaller than the sum of its proper divisors (183225738).

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

166023798 is a wasteful number, since it uses less digits than its factorization.

166023798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9628.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 166023798 is about 12885.0222351380. The cubic root of 166023798 is about 549.6127279247.

The spelling of 166023798 in words is "one hundred sixty-six million, twenty-three thousand, seven hundred ninety-eight".