6681423900 has 72 divisors (see below), whose sum is σ = 19345011840. Its totient is φ = 1780475840.

The previous prime is 6681423863. The next prime is 6681423913. The reversal of 6681423900 is 93241866.

It is a zygodrome in base 2.

It is a congruent number.

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, 475171 + ... + 489029.

It is an arithmetic number, because the mean of its divisors is an integer number (268680720).

Almost surely, 2^6681423900 is an apocalyptic number.

6681423900 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6681423900 is an abundant number, since it is smaller than the sum of its proper divisors (12663587940).

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

6681423900 is a wasteful number, since it uses less digits than its factorization.

6681423900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15483 (or 15476 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 6681423900 is about 81739.9773672589. The cubic root of 6681423900 is about 1883.4597431706.

The spelling of 6681423900 in words is "six billion, six hundred eighty-one million, four hundred twenty-three thousand, nine hundred".