2198727 has 6 divisors (see below), whose sum is σ = 3175952. Its totient is φ = 1465812.

The previous prime is 2198723. The next prime is 2198747. The reversal of 2198727 is 7278912.

It is not a de Polignac number, because 2198727 - 2² = 2198723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2198691 and 2198700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122143 + ... + 122160.

2^2198727 is an apocalyptic number.

2198727 is a deficient number, since it is larger than the sum of its proper divisors (977225).

2198727 is a wasteful number, since it uses less digits than its factorization.

2198727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244309 (or 244306 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 2198727 is about 1482.8105071114. The cubic root of 2198727 is about 130.0340541949.

The spelling of 2198727 in words is "two million, one hundred ninety-eight thousand, seven hundred twenty-seven".