649702983424 has 108 divisors (see below), whose sum is σ = 1426309577280. Its totient is φ = 295148339200.

The previous prime is 649702983383. The next prime is 649702983427. The reversal of 649702983424 is 424389207946.

It is a happy number.

It is a super-2 number, since 2×649702983424² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649702983427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64456017 + ... + 64466095.

It is an arithmetic number, because the mean of its divisors is an integer number (13206570160).

Almost surely, 2^649702983424 is an apocalyptic number.

649702983424 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 649702983424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713154788640).

649702983424 is an abundant number, since it is smaller than the sum of its proper divisors (776606593856).

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

649702983424 is a wasteful number, since it uses less digits than its factorization.

649702983424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12198 (or 12173 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 58.

The spelling of 649702983424 in words is "six hundred forty-nine billion, seven hundred two million, nine hundred eighty-three thousand, four hundred twenty-four".