195061664 has 24 divisors (see below), whose sum is σ = 438889248. Its totient is φ = 83597760.

The previous prime is 195061663. The next prime is 195061673. The reversal of 195061664 is 466160591.

It is not an unprimeable number, because it can be changed into a prime (195061663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435182 + ... + 435629.

It is an arithmetic number, because the mean of its divisors is an integer number (18287052).

Almost surely, 2^195061664 is an apocalyptic number.

195061664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

195061664 is an abundant number, since it is smaller than the sum of its proper divisors (243827584).

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

195061664 is an equidigital number, since it uses as much as digits as its factorization.

195061664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870828 (or 870820 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 195061664 is about 13966.4477946255. The cubic root of 195061664 is about 579.9501185798.

The spelling of 195061664 in words is "one hundred ninety-five million, sixty-one thousand, six hundred sixty-four".