649413223 has 4 divisors (see below), whose sum is σ = 649479600. Its totient is φ = 649346848.

The previous prime is 649413221. The next prime is 649413283. The reversal of 649413223 is 322314946.

It is a happy number.

649413223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 322314946 = 2 ⋅161157473.

It is a cyclic number.

It is not a de Polignac number, because 649413223 - 2¹ = 649413221 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 (649413221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15298 + ... + 39151.

It is an arithmetic number, because the mean of its divisors is an integer number (162369900).

Almost surely, 2^649413223 is an apocalyptic number.

649413223 is a deficient number, since it is larger than the sum of its proper divisors (66377).

649413223 is a wasteful number, since it uses less digits than its factorization.

649413223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66376.

The product of its digits is 31104, while the sum is 34.

The square root of 649413223 is about 25483.5873259634. The cubic root of 649413223 is about 865.9783657459.

It can be divided in two parts, 649413 and 223, that added together give a square (649636 = 806²).

The spelling of 649413223 in words is "six hundred forty-nine million, four hundred thirteen thousand, two hundred twenty-three".