6864783642 has 48 divisors (see below), whose sum is σ = 15925112640. Its totient is φ = 2187840600.

The previous prime is 6864783637. The next prime is 6864783647. The reversal of 6864783642 is 2463874686.

It is an interprime number because it is at equal distance from previous prime (6864783637) and next prime (6864783647).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6864783647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2918767 + ... + 2921117.

It is an arithmetic number, because the mean of its divisors is an integer number (331773180).

Almost surely, 2^6864783642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6864783642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7962556320).

6864783642 is an abundant number, since it is smaller than the sum of its proper divisors (9060328998).

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

6864783642 is an equidigital number, since it uses as much as digits as its factorization.

6864783642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4736 (or 2379 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The square root of 6864783642 is about 82853.9898978921. The cubic root of 6864783642 is about 1900.5338889321.

The spelling of 6864783642 in words is "six billion, eight hundred sixty-four million, seven hundred eighty-three thousand, six hundred forty-two".