649923896 has 32 divisors (see below), whose sum is σ = 1246752000. Its totient is φ = 317481696.

The previous prime is 649923893. The next prime is 649923917. The reversal of 649923896 is 698329946.

649923896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649923893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276695 + ... + 279033.

It is an arithmetic number, because the mean of its divisors is an integer number (38961000).

Almost surely, 2^649923896 is an apocalyptic number.

It is an amenable number.

649923896 is a deficient number, since it is larger than the sum of its proper divisors (596828104).

649923896 is a wasteful number, since it uses less digits than its factorization.

649923896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131 (or 3127 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 56.

The square root of 649923896 is about 25493.6050020392. The cubic root of 649923896 is about 866.2052967081.

The spelling of 649923896 in words is "six hundred forty-nine million, nine hundred twenty-three thousand, eight hundred ninety-six".