649119744 has 480 divisors, whose sum is σ = 2441799360. Its totient is φ = 167215104.

The previous prime is 649119697. The next prime is 649119761. The reversal of 649119744 is 447911946.

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 649119744.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15095787 + ... + 15095829.

It is an arithmetic number, because the mean of its divisors is an integer number (5087082).

Almost surely, 2^649119744 is an apocalyptic number.

649119744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649119744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1220899680).

649119744 is an abundant number, since it is smaller than the sum of its proper divisors (1792679616).

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

649119744 is a wasteful number, since it uses less digits than its factorization.

649119744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 68 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 649119744 is about 25477.8284788951. The cubic root of 649119744 is about 865.8478968090.

The spelling of 649119744 in words is "six hundred forty-nine million, one hundred nineteen thousand, seven hundred forty-four".