6623861081 has 4 divisors (see below), whose sum is σ = 6627520464. Its totient is φ = 6620201700.

The previous prime is 6623861063. The next prime is 6623861089. The reversal of 6623861081 is 1801683266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6623861081 - 2¹⁴ = 6623844697 is a prime.

It is a super-2 number, since 2×6623861081² = 87751071240772977122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6623861089) 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, 1826975 + ... + 1830596.

It is an arithmetic number, because the mean of its divisors is an integer number (1656880116).

Almost surely, 2^6623861081 is an apocalyptic number.

It is an amenable number.

6623861081 is a deficient number, since it is larger than the sum of its proper divisors (3659383).

6623861081 is a wasteful number, since it uses less digits than its factorization.

6623861081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659382.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 6623861081 is about 81387.1063559825. The cubic root of 6623861081 is about 1878.0352456542.

The spelling of 6623861081 in words is "six billion, six hundred twenty-three million, eight hundred sixty-one thousand, eighty-one".