649670193 has 32 divisors (see below), whose sum is σ = 1002777600. Its totient is φ = 415238400.

The previous prime is 649670159. The next prime is 649670201. The reversal of 649670193 is 391076946.

649670193 is a `hidden beast` number, since 6 + 496 + 70 + 1 + 93 = 666.

649670193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 649670193 - 2⁹ = 649669681 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (649670993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87673 + ... + 94793.

It is an arithmetic number, because the mean of its divisors is an integer number (31336800).

Almost surely, 2^649670193 is an apocalyptic number.

It is an amenable number.

649670193 is a deficient number, since it is larger than the sum of its proper divisors (353107407).

649670193 is a wasteful number, since it uses less digits than its factorization.

649670193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7270 (or 7264 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 649670193 is about 25488.6286998732. The cubic root of 649670193 is about 866.0925719800.

The spelling of 649670193 in words is "six hundred forty-nine million, six hundred seventy thousand, one hundred ninety-three".