6861021063 has 8 divisors (see below), whose sum is σ = 9851722608. Its totient is φ = 4222166784.

The previous prime is 6861021059. The next prime is 6861021067. The reversal of 6861021063 is 3601201686.

It is an interprime number because it is at equal distance from previous prime (6861021059) and next prime (6861021067).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6861021063 - 2² = 6861021059 is a prime.

It is a super-2 number, since 2×6861021063² = 94147220053859299938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6861021067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87961770 + ... + 87961847.

It is an arithmetic number, because the mean of its divisors is an integer number (1231465326).

Almost surely, 2^6861021063 is an apocalyptic number.

6861021063 is a deficient number, since it is larger than the sum of its proper divisors (2990701545).

6861021063 is a wasteful number, since it uses less digits than its factorization.

6861021063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175923633.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 6861021063 is about 82831.2807036086. The cubic root of 6861021063 is about 1900.1865987557.

The spelling of 6861021063 in words is "six billion, eight hundred sixty-one million, twenty-one thousand, sixty-three".