6687020898 has 24 divisors (see below), whose sum is σ = 14687021388. Its totient is φ = 2198472192.

The previous prime is 6687020887. The next prime is 6687020909. The reversal of 6687020898 is 8980207866.

It is an interprime number because it is at equal distance from previous prime (6687020887) and next prime (6687020909).

It can be written as a sum of positive squares in 2 ways, for example, as 6315957729 + 371063169 = 79473^2 + 19263^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2543215 + ... + 2545842.

Almost surely, 2^6687020898 is an apocalyptic number.

6687020898 is an abundant number, since it is smaller than the sum of its proper divisors (8000000490).

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

6687020898 is a wasteful number, since it uses less digits than its factorization.

6687020898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5089138 (or 5089135 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 6687020898 is about 81774.2068014114. The cubic root of 6687020898 is about 1883.9855182329.

The spelling of 6687020898 in words is "six billion, six hundred eighty-seven million, twenty thousand, eight hundred ninety-eight".