196977321 has 12 divisors (see below), whose sum is σ = 284686272. Its totient is φ = 131242776.

The previous prime is 196977247. The next prime is 196977337. The reversal of 196977321 is 123779691.

It is not a de Polignac number, because 196977321 - 2⁹ = 196976809 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (196977421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13540 + ... + 24026.

It is an arithmetic number, because the mean of its divisors is an integer number (23723856).

Almost surely, 2^196977321 is an apocalyptic number.

It is an amenable number.

196977321 is a deficient number, since it is larger than the sum of its proper divisors (87708951).

196977321 is a wasteful number, since it uses less digits than its factorization.

196977321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12580 (or 12577 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 196977321 is about 14034.8609184416. The cubic root of 196977321 is about 581.8424574470.

The spelling of 196977321 in words is "one hundred ninety-six million, nine hundred seventy-seven thousand, three hundred twenty-one".