649231296 has 112 divisors (see below), whose sum is σ = 1995586560. Its totient is φ = 182430720.

The previous prime is 649231283. The next prime is 649231301. The reversal of 649231296 is 692132946.

649231296 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78025 + ... + 85943.

Almost surely, 2^649231296 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 649231296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997793280).

649231296 is an abundant number, since it is smaller than the sum of its proper divisors (1346355264).

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

649231296 is a wasteful number, since it uses less digits than its factorization.

649231296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8002 (or 7992 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 649231296 is about 25480.0175824115. The cubic root of 649231296 is about 865.8974929650.

The spelling of 649231296 in words is "six hundred forty-nine million, two hundred thirty-one thousand, two hundred ninety-six".