195665064 has 96 divisors (see below), whose sum is σ = 570173760. Its totient is φ = 54812160.

The previous prime is 195665047. The next prime is 195665081. The reversal of 195665064 is 460566591.

195665064 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 (195665047) and next prime (195665081).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 624972 + ... + 625284.

It is an arithmetic number, because the mean of its divisors is an integer number (5939310).

Almost surely, 2^195665064 is an apocalyptic number.

195665064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195665064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285086880).

195665064 is an abundant number, since it is smaller than the sum of its proper divisors (374508696).

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

195665064 is a wasteful number, since it uses less digits than its factorization.

195665064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 195665064 is about 13988.0328852916. The cubic root of 195665064 is about 580.5475052022.

The spelling of 195665064 in words is "one hundred ninety-five million, six hundred sixty-five thousand, sixty-four".