196701921 has 24 divisors (see below), whose sum is σ = 311763816. Its totient is φ = 118759680.

The previous prime is 196701919. The next prime is 196701937. The reversal of 196701921 is 129107691.

It can be written as a sum of positive squares in 4 ways, for example, as 1296 + 196700625 = 36^2 + 14025^2 .

It is not a de Polignac number, because 196701921 - 2¹ = 196701919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196701971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9660 + ... + 22061.

It is an arithmetic number, because the mean of its divisors is an integer number (12990159).

Almost surely, 2^196701921 is an apocalyptic number.

It is an amenable number.

196701921 is a deficient number, since it is larger than the sum of its proper divisors (115061895).

196701921 is a wasteful number, since it uses less digits than its factorization.

196701921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31793 (or 31790 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 36.

The square root of 196701921 is about 14025.0462031325. The cubic root of 196701921 is about 581.5711670795.

The spelling of 196701921 in words is "one hundred ninety-six million, seven hundred one thousand, nine hundred twenty-one".