649198 has 16 divisors (see below), whose sum is σ = 1109376. Its totient is φ = 282040.

The previous prime is 649183. The next prime is 649217. The reversal of 649198 is 891946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136 + ... + 1147.

It is an arithmetic number, because the mean of its divisors is an integer number (69336).

2⁶⁴⁹¹⁹⁸ is an apocalyptic number.

649198 is a deficient number, since it is larger than the sum of its proper divisors (460178).

649198 is a wasteful number, since it uses less digits than its factorization.

649198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319.

The product of its digits is 15552, while the sum is 37.

The square root of 649198 is about 805.7282420270. The cubic root of 649198 is about 86.5882690117.

The spelling of 649198 in words is "six hundred forty-nine thousand, one hundred ninety-eight".