6213881 has 4 divisors (see below), whose sum is σ = 6219600. Its totient is φ = 6208164.

The previous prime is 6213869. The next prime is 6213899. The reversal of 6213881 is 1883126.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6213881 - 2¹⁴ = 6197497 is a prime.

It is a super-2 number, since 2×6213881² = 77224634164322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6212881) 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, 671 + ... + 3588.

It is an arithmetic number, because the mean of its divisors is an integer number (1554900).

Almost surely, 2^6213881 is an apocalyptic number.

It is an amenable number.

6213881 is a deficient number, since it is larger than the sum of its proper divisors (5719).

6213881 is a wasteful number, since it uses less digits than its factorization.

6213881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5718.

The product of its digits is 2304, while the sum is 29.

The square root of 6213881 is about 2492.7657330764. The cubic root of 6213881 is about 183.8460531018.

The spelling of 6213881 in words is "six million, two hundred thirteen thousand, eight hundred eighty-one".