198400756706 has 8 divisors (see below), whose sum is σ = 297630815580. Its totient is φ = 99190484848.

The previous prime is 198400756667. The next prime is 198400756709. The reversal of 198400756706 is 607657004891.

It can be written as a sum of positive squares in 2 ways, for example, as 173418109225 + 24982647481 = 416435^2 + 158059^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (198400756709) 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, 4921661 + ... + 4961808.

Almost surely, 2^198400756706 is an apocalyptic number.

198400756706 is a deficient number, since it is larger than the sum of its proper divisors (99230058874).

198400756706 is a wasteful number, since it uses less digits than its factorization.

198400756706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9893508.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 198400756706 in words is "one hundred ninety-eight billion, four hundred million, seven hundred fifty-six thousand, seven hundred six".