649571122 has 8 divisors (see below), whose sum is σ = 1031671836. Its totient is φ = 305680512.

The previous prime is 649571113. The next prime is 649571123. The reversal of 649571122 is 221175946.

It can be written as a sum of positive squares in 2 ways, for example, as 634586481 + 14984641 = 25191^2 + 3871^2 .

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

It is not an unprimeable number, because it can be changed into a prime (649571123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9552483 + ... + 9552550.

Almost surely, 2^649571122 is an apocalyptic number.

649571122 is a deficient number, since it is larger than the sum of its proper divisors (382100714).

649571122 is a wasteful number, since it uses less digits than its factorization.

649571122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19105052.

The product of its digits is 30240, while the sum is 37.

The square root of 649571122 is about 25486.6851905068. The cubic root of 649571122 is about 866.0485450157.

The spelling of 649571122 in words is "six hundred forty-nine million, five hundred seventy-one thousand, one hundred twenty-two".