6689650898 has 16 divisors (see below), whose sum is σ = 11469131520. Its totient is φ = 2866703616.

The previous prime is 6689650883. The next prime is 6689650931. The reversal of 6689650898 is 8980569866.

It is a happy number.

It is a super-4 number, since 4×6689650898⁴ (a number of 40 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177458 + ... + 211826.

It is an arithmetic number, because the mean of its divisors is an integer number (716820720).

Almost surely, 2^6689650898 is an apocalyptic number.

6689650898 is a deficient number, since it is larger than the sum of its proper divisors (4779480622).

6689650898 is a wasteful number, since it uses less digits than its factorization.

6689650898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48281.

The product of its (nonzero) digits is 44789760, while the sum is 65.

The square root of 6689650898 is about 81790.2860858183. The cubic root of 6689650898 is about 1884.2324758616.

The spelling of 6689650898 in words is "six billion, six hundred eighty-nine million, six hundred fifty thousand, eight hundred ninety-eight".