649071322 has 32 divisors (see below), whose sum is σ = 1045805904. Its totient is φ = 301056000.

The previous prime is 649071317. The next prime is 649071323. The reversal of 649071322 is 223170946.

It can be written as a sum of positive squares in 8 ways, for example, as 424401201 + 224670121 = 20601^2 + 14989^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (649071323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925572 + ... + 926272.

Almost surely, 2^649071322 is an apocalyptic number.

649071322 is a deficient number, since it is larger than the sum of its proper divisors (396734582).

649071322 is a wasteful number, since it uses less digits than its factorization.

649071322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 649071322 is about 25476.8781839534. The cubic root of 649071322 is about 865.8263665598.

The spelling of 649071322 in words is "six hundred forty-nine million, seventy-one thousand, three hundred twenty-two".