6129881 has 4 divisors (see below), whose sum is σ = 6260352. Its totient is φ = 5999412.

The previous prime is 6129863. The next prime is 6129899. The reversal of 6129881 is 1889216.

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 an interprime number because it is at equal distance from previous prime (6129863) and next prime (6129899).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6129881 is a prime.

It is a super-2 number, since 2×6129881² = 75150882148322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6129811) 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, 65165 + ... + 65258.

It is an arithmetic number, because the mean of its divisors is an integer number (1565088).

Almost surely, 2^6129881 is an apocalyptic number.

It is an amenable number.

6129881 is a deficient number, since it is larger than the sum of its proper divisors (130471).

6129881 is a wasteful number, since it uses less digits than its factorization.

6129881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130470.

The product of its digits is 6912, while the sum is 35.

The square root of 6129881 is about 2475.8596486877. The cubic root of 6129881 is about 183.0138741509.

The spelling of 6129881 in words is "six million, one hundred twenty-nine thousand, eight hundred eighty-one".