6654535398 has 120 divisors (see below), whose sum is σ = 17815987728. Its totient is φ = 1818466848.

The previous prime is 6654535397. The next prime is 6654535411. The reversal of 6654535398 is 8935354566.

It is a happy number.

6654535398 is a `hidden beast` number, since 6 + 6 + 54 + 53 + 539 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6654535397) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 594340 + ... + 605432.

Almost surely, 2^6654535398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6654535398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8907993864).

6654535398 is an abundant number, since it is smaller than the sum of its proper divisors (11161452330).

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

6654535398 is a wasteful number, since it uses less digits than its factorization.

6654535398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11160 (or 11128 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 54.

The square root of 6654535398 is about 81575.3357210376. The cubic root of 6654535398 is about 1880.9297685216.

The spelling of 6654535398 in words is "six billion, six hundred fifty-four million, five hundred thirty-five thousand, three hundred ninety-eight".