198572727 has 8 divisors (see below), whose sum is σ = 264864640. Its totient is φ = 132331320.

The previous prime is 198572723. The next prime is 198572749. The reversal of 198572727 is 727275891.

It is a happy number.

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

It is not a de Polignac number, because 198572727 - 2² = 198572723 is a prime.

It is a super-2 number, since 2×198572727² = 78862255816433058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198572723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2227 + ... + 20052.

It is an arithmetic number, because the mean of its divisors is an integer number (33108080).

Almost surely, 2^198572727 is an apocalyptic number.

198572727 is a deficient number, since it is larger than the sum of its proper divisors (66291913).

198572727 is a wasteful number, since it uses less digits than its factorization.

198572727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25253.

The product of its digits is 493920, while the sum is 48.

The square root of 198572727 is about 14091.5835518937. The cubic root of 198572727 is about 583.4091014144.

The spelling of 198572727 in words is "one hundred ninety-eight million, five hundred seventy-two thousand, seven hundred twenty-seven".