649118047 has 8 divisors (see below), whose sum is σ = 668776896. Its totient is φ = 629570592.

The previous prime is 649118039. The next prime is 649118069. The reversal of 649118047 is 740811946.

649118047 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 a cyclic number.

It is not a de Polignac number, because 649118047 - 2³ = 649118039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649118087) 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, 15943 + ... + 39400.

It is an arithmetic number, because the mean of its divisors is an integer number (83597112).

Almost surely, 2^649118047 is an apocalyptic number.

649118047 is a deficient number, since it is larger than the sum of its proper divisors (19658849).

649118047 is a wasteful number, since it uses less digits than its factorization.

649118047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55697.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 649118047 is about 25477.7951754072. The cubic root of 649118047 is about 865.8471422768.

The spelling of 649118047 in words is "six hundred forty-nine million, one hundred eighteen thousand, forty-seven".