649527296 has 136 divisors (see below), whose sum is σ = 1528812144. Its totient is φ = 272629760.

The previous prime is 649527269. The next prime is 649527299. The reversal of 649527296 is 692725946.

It is a tau number, because it is divible by the number of its divisors (136).

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649527299) 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, 12255206 + ... + 12255258.

Almost surely, 2^649527296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649527296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764406072).

649527296 is an abundant number, since it is smaller than the sum of its proper divisors (879284848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649527296 is an equidigital number, since it uses as much as digits as its factorization.

649527296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 83 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The square root of 649527296 is about 25485.8253937360. The cubic root of 649527296 is about 866.0290673963.

The spelling of 649527296 in words is "six hundred forty-nine million, five hundred twenty-seven thousand, two hundred ninety-six".