191064 has 32 divisors (see below), whose sum is σ = 504000. Its totient is φ = 60192.

The previous prime is 191057. The next prime is 191071. The reversal of 191064 is 460191.

191064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (191057) and next prime (191071).

It is a self number, because there is not a number n which added to its sum of digits gives 191064.

It is a congruent number.

It is an unprimeable number.

191064 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247 + ... + 665.

It is an arithmetic number, because the mean of its divisors is an integer number (15750).

2¹⁹¹⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252000).

191064 is an abundant number, since it is smaller than the sum of its proper divisors (312936).

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

191064 is a wasteful number, since it uses less digits than its factorization.

191064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 191064 is about 437.1086821375. The cubic root of 191064 is about 57.5960838387.

It can be divided in two parts, 19106 and 4, that added together give a triangular number (19110 = T₁₉₅).

The spelling of 191064 in words is "one hundred ninety-one thousand, sixty-four".