649241655 has 8 divisors (see below), whose sum is σ = 1038786672. Its totient is φ = 346262208.

The previous prime is 649241641. The next prime is 649241693. The reversal of 649241655 is 556142946.

649241655 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 649241655 - 2⁹ = 649241143 is a prime.

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, 21641374 + ... + 21641403.

It is an arithmetic number, because the mean of its divisors is an integer number (129848334).

Almost surely, 2^649241655 is an apocalyptic number.

649241655 is a deficient number, since it is larger than the sum of its proper divisors (389545017).

649241655 is a wasteful number, since it uses less digits than its factorization.

649241655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43282785.

The product of its digits is 259200, while the sum is 42.

The square root of 649241655 is about 25480.2208585405. The cubic root of 649241655 is about 865.9020983008.

The spelling of 649241655 in words is "six hundred forty-nine million, two hundred forty-one thousand, six hundred fifty-five".