2685535398 has 216 divisors, whose sum is σ = 7520570928. Its totient is φ = 704179008.

The previous prime is 2685535381. The next prime is 2685535403. The reversal of 2685535398 is 8935355862.

2685535398 is a `hidden beast` number, since 26 + 85 + 5 + 3 + 539 + 8 = 666.

It is a super-2 number, since 2×2685535398² = 14424200747822036808, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 15523240 + ... + 15523412.

It is an arithmetic number, because the mean of its divisors is an integer number (34817458).

Almost surely, 2^2685535398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2685535398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3760285464).

2685535398 is an abundant number, since it is smaller than the sum of its proper divisors (4835035530).

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

2685535398 is an equidigital number, since it uses as much as digits as its factorization.

2685535398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 198 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 54.

The square root of 2685535398 is about 51822.1516149224. The cubic root of 2685535398 is about 1389.9855765113.

The spelling of 2685535398 in words is "two billion, six hundred eighty-five million, five hundred thirty-five thousand, three hundred ninety-eight".