6616698408 has 96 divisors (see below), whose sum is σ = 18839971200. Its totient is φ = 2151653760.

The previous prime is 6616698391. The next prime is 6616698461. The reversal of 6616698408 is 8048966166.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353985 + ... + 372207.

It is an arithmetic number, because the mean of its divisors is an integer number (196249700).

Almost surely, 2^6616698408 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 6616698408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9419985600).

6616698408 is an abundant number, since it is smaller than the sum of its proper divisors (12223272792).

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

6616698408 is a wasteful number, since it uses less digits than its factorization.

6616698408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18320 (or 18269 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 6616698408 is about 81343.0907207244. The cubic root of 6616698408 is about 1877.3580674064.

The spelling of 6616698408 in words is "six billion, six hundred sixteen million, six hundred ninety-eight thousand, four hundred eight".