6533866404 has 384 divisors, whose sum is σ = 20158709760. Its totient is φ = 1813363200.

The previous prime is 6533866403. The next prime is 6533866421. The reversal of 6533866404 is 4046683356.

It is a super-4 number, since 4×6533866404⁴ (a number of 40 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6533866404.

It is not an unprimeable number, because it can be changed into a prime (6533866403) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 61064119 + ... + 61064225.

It is an arithmetic number, because the mean of its divisors is an integer number (52496640).

Almost surely, 2^6533866404 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 6533866404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10079354880).

6533866404 is an abundant number, since it is smaller than the sum of its proper divisors (13624843356).

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

6533866404 is a wasteful number, since it uses less digits than its factorization.

6533866404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The square root of 6533866404 is about 80832.3351388539. The cubic root of 6533866404 is about 1869.4911637567.

The spelling of 6533866404 in words is "six billion, five hundred thirty-three million, eight hundred sixty-six thousand, four hundred four".