649120407 has 8 divisors (see below), whose sum is σ = 932070384. Its totient is φ = 399458688.

The previous prime is 649120391. The next prime is 649120441. The reversal of 649120407 is 704021946.

It is a happy number.

649120407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 649120407 - 2⁴ = 649120391 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649120447) 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, 8322018 + ... + 8322095.

It is an arithmetic number, because the mean of its divisors is an integer number (116508798).

Almost surely, 2^649120407 is an apocalyptic number.

649120407 is a deficient number, since it is larger than the sum of its proper divisors (282949977).

649120407 is a wasteful number, since it uses less digits than its factorization.

649120407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16644129.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 649120407 is about 25477.8414902048. The cubic root of 649120407 is about 865.8481915964.

The spelling of 649120407 in words is "six hundred forty-nine million, one hundred twenty thousand, four hundred seven".