6490235844 has 81 divisors (see below), whose sum is σ = 17027878413. Its totient is φ = 2084300064.

The previous prime is 6490235833. The next prime is 6490235891. The reversal of 6490235844 is 4485320946.

The square root of 6490235844 is 80562.

It is a perfect power (a square), and thus also a powerful number.

6490235844 is a `hidden beast` number, since 6 + 49 + 0 + 23 + 584 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3403322244 + 3086913600 = 58338^2 + 55560^2 .

It is a super-2 number, since 2×6490235844² = 84246322621484784672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6490235844.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14017557 + ... + 14018019.

Almost surely, 2^6490235844 is an apocalyptic number.

6490235844 is the 80562-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6490235844

6490235844 is an abundant number, since it is smaller than the sum of its proper divisors (10537642569).

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

6490235844 is a wasteful number, since it uses less digits than its factorization.

6490235844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The cubic root of 6490235844 is about 1865.3206275030.

The spelling of 6490235844 in words is "six billion, four hundred ninety million, two hundred thirty-five thousand, eight hundred forty-four".