649895232 has 168 divisors, whose sum is σ = 2055412704. Its totient is φ = 180569088.

The previous prime is 649895231. The next prime is 649895287. The reversal of 649895232 is 232598946.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (168).

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 (649895231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347163 + ... + 349029.

Almost surely, 2^649895232 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 649895232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1027706352).

649895232 is an abundant number, since it is smaller than the sum of its proper divisors (1405517472).

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

649895232 is a wasteful number, since it uses less digits than its factorization.

649895232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933 (or 1916 counting only the distinct ones).

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

The square root of 649895232 is about 25493.0428156389. The cubic root of 649895232 is about 866.1925622563.

The spelling of 649895232 in words is "six hundred forty-nine million, eight hundred ninety-five thousand, two hundred thirty-two".