649922592 has 96 divisors (see below), whose sum is σ = 1942133760. Its totient is φ = 188376320.

The previous prime is 649922549. The next prime is 649922599. The reversal of 649922592 is 295229946.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is not an unprimeable number, because it can be changed into a prime (649922599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10909 + ... + 37667.

It is an arithmetic number, because the mean of its divisors is an integer number (20230560).

Almost surely, 2^649922592 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 649922592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (971066880).

649922592 is an abundant number, since it is smaller than the sum of its proper divisors (1292211168).

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

649922592 is a wasteful number, since it uses less digits than its factorization.

649922592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26806 (or 26798 counting only the distinct ones).

The product of its digits is 699840, while the sum is 48.

The square root of 649922592 is about 25493.5794269851. The cubic root of 649922592 is about 866.2047173929.

The spelling of 649922592 in words is "six hundred forty-nine million, nine hundred twenty-two thousand, five hundred ninety-two".