164011566 has 32 divisors (see below), whose sum is σ = 331411968. Its totient is φ = 54109440.

The previous prime is 164011531. The next prime is 164011567. The reversal of 164011566 is 665110461.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164011567) 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, 446715 + ... + 447081.

It is an arithmetic number, because the mean of its divisors is an integer number (10356624).

Almost surely, 2^164011566 is an apocalyptic number.

164011566 is an abundant number, since it is smaller than the sum of its proper divisors (167400402).

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

164011566 is a wasteful number, since it uses less digits than its factorization.

164011566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 164011566 is about 12806.7000433367. The cubic root of 164011566 is about 547.3832348312.

The spelling of 164011566 in words is "one hundred sixty-four million, eleven thousand, five hundred sixty-six".