649873224 has 384 divisors, whose sum is σ = 2415329280. Its totient is φ = 152409600.

The previous prime is 649873187. The next prime is 649873271. The reversal of 649873224 is 422378946.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 649873224.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5117049 + ... + 5117175.

It is an arithmetic number, because the mean of its divisors is an integer number (6289920).

Almost surely, 2^649873224 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 649873224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1207664640).

649873224 is an abundant number, since it is smaller than the sum of its proper divisors (1765456056).

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

649873224 is a wasteful number, since it uses less digits than its factorization.

649873224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 234 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 649873224 is about 25492.6111648062. The cubic root of 649873224 is about 866.1827845874.

The spelling of 649873224 in words is "six hundred forty-nine million, eight hundred seventy-three thousand, two hundred twenty-four".