649592832 has 160 divisors (see below), whose sum is σ = 2013264000. Its totient is φ = 182452224.

The previous prime is 649592821. The next prime is 649592833. The reversal of 649592832 is 238295946.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649592833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11010019 + ... + 11010077.

It is an arithmetic number, because the mean of its divisors is an integer number (12582900).

Almost surely, 2^649592832 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 649592832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006632000).

649592832 is an abundant number, since it is smaller than the sum of its proper divisors (1363671168).

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

649592832 is an frugal number, since it uses more digits than its factorization.

649592832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 71 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 649592832 is about 25487.1110956107. Note that the first 3 decimals coincide. The cubic root of 649592832 is about 866.0581932815.

The spelling of 649592832 in words is "six hundred forty-nine million, five hundred ninety-two thousand, eight hundred thirty-two".