6861283999 has 4 divisors (see below), whose sum is σ = 6870003064. Its totient is φ = 6852564936.

The previous prime is 6861283987. The next prime is 6861284051. The reversal of 6861283999 is 9993821686.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6861283999 - 2¹³ = 6861275807 is a prime.

It is a super-2 number, since 2×6861283999² = 94154436229866864002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6861283199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4358352 + ... + 4359925.

It is an arithmetic number, because the mean of its divisors is an integer number (1717500766).

Almost surely, 2^6861283999 is an apocalyptic number.

6861283999 is a deficient number, since it is larger than the sum of its proper divisors (8719065).

6861283999 is an equidigital number, since it uses as much as digits as its factorization.

6861283999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8719064.

The product of its digits is 10077696, while the sum is 61.

The square root of 6861283999 is about 82832.8678665661. The cubic root of 6861283999 is about 1900.2108721633.

The spelling of 6861283999 in words is "six billion, eight hundred sixty-one million, two hundred eighty-three thousand, nine hundred ninety-nine".