6688020142 has 16 divisors (see below), whose sum is σ = 10066230720. Its totient is φ = 3332627712.

The previous prime is 6688020103. The next prime is 6688020149. The reversal of 6688020142 is 2410208866.

It is a super-2 number, since 2×6688020142² = 89459226839595400328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6688020149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896058 + ... + 903490.

It is an arithmetic number, because the mean of its divisors is an integer number (629139420).

Almost surely, 2^6688020142 is an apocalyptic number.

6688020142 is a deficient number, since it is larger than the sum of its proper divisors (3378210578).

6688020142 is a wasteful number, since it uses less digits than its factorization.

6688020142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8907.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 6688020142 is about 81780.3163481287. The cubic root of 6688020142 is about 1884.0793551094.

The spelling of 6688020142 in words is "six billion, six hundred eighty-eight million, twenty thousand, one hundred forty-two".