196661696 has 84 divisors (see below), whose sum is σ = 495321336. Its totient is φ = 76608000.

The previous prime is 196661687. The next prime is 196661713. The reversal of 196661696 is 696166691.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31646 + ... + 37346.

Almost surely, 2^196661696 is an apocalyptic number.

196661696 is a gapful number since it is divisible by the number (16) 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 196661696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247660668).

196661696 is an abundant number, since it is smaller than the sum of its proper divisors (298659640).

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

196661696 is a wasteful number, since it uses less digits than its factorization.

196661696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738 (or 5721 counting only the distinct ones).

The product of its digits is 629856, while the sum is 50.

The square root of 196661696 is about 14023.6120881890. The cubic root of 196661696 is about 581.5315211440.

The spelling of 196661696 in words is "one hundred ninety-six million, six hundred sixty-one thousand, six hundred ninety-six".