196998657 has 16 divisors (see below), whose sum is σ = 275481600. Its totient is φ = 124982352.

The previous prime is 196998649. The next prime is 196998661. The reversal of 196998657 is 756899691.

It is not a de Polignac number, because 196998657 - 2³ = 196998649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196998657.

It is not an unprimeable number, because it can be changed into a prime (196998617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6558 + ... + 20904.

It is an arithmetic number, because the mean of its divisors is an integer number (17217600).

Almost surely, 2^196998657 is an apocalyptic number.

It is an amenable number.

196998657 is a deficient number, since it is larger than the sum of its proper divisors (78482943).

196998657 is a wasteful number, since it uses less digits than its factorization.

196998657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14572.

The product of its digits is 7348320, while the sum is 60.

The square root of 196998657 is about 14035.6210051426. The cubic root of 196998657 is about 581.8634645057.

The spelling of 196998657 in words is "one hundred ninety-six million, nine hundred ninety-eight thousand, six hundred fifty-seven".