649462197384 has 576 divisors, whose sum is σ = 2440581736320. Its totient is φ = 150676070400.

The previous prime is 649462197379. The next prime is 649462197401. The reversal of 649462197384 is 483791264946.

It is a happy number.

649462197384 is a `hidden beast` number, since 6 + 4 + 9 + 4 + 62 + 197 + 384 = 666.

It is a super-2 number, since 2×649462197384² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

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

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 69256504 + ... + 69265880.

It is an arithmetic number, because the mean of its divisors is an integer number (4237121070).

Almost surely, 2^649462197384 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 649462197384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1220290868160).

649462197384 is an abundant number, since it is smaller than the sum of its proper divisors (1791119538936).

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

649462197384 is a wasteful number, since it uses less digits than its factorization.

649462197384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9482 (or 9444 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 63.

The spelling of 649462197384 in words is "six hundred forty-nine billion, four hundred sixty-two million, one hundred ninety-seven thousand, three hundred eighty-four".