649411783 has 4 divisors (see below), whose sum is σ = 655481160. Its totient is φ = 643342408.

The previous prime is 649411733. The next prime is 649411787. The reversal of 649411783 is 387114946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 387114946 = 2 ⋅193557473.

It is a cyclic number.

It is not a de Polignac number, because 649411783 - 2²¹ = 647314631 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 (649411787) 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, 3034528 + ... + 3034741.

It is an arithmetic number, because the mean of its divisors is an integer number (163870290).

Almost surely, 2^649411783 is an apocalyptic number.

649411783 is a deficient number, since it is larger than the sum of its proper divisors (6069377).

649411783 is a wasteful number, since it uses less digits than its factorization.

649411783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6069376.

The product of its digits is 145152, while the sum is 43.

The square root of 649411783 is about 25483.5590724687. The cubic root of 649411783 is about 865.9777256759.

The spelling of 649411783 in words is "six hundred forty-nine million, four hundred eleven thousand, seven hundred eighty-three".