6213838 has 4 divisors (see below), whose sum is σ = 9320760. Its totient is φ = 3106918.

The previous prime is 6213827. The next prime is 6213839. The reversal of 6213838 is 8383126.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8383126 = 2 ⋅4191563.

It is a super-2 number, since 2×6213838² = 77223565380488, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6213839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1553458 + ... + 1553461.

It is an arithmetic number, because the mean of its divisors is an integer number (2330190).

Almost surely, 2^6213838 is an apocalyptic number.

6213838 is a deficient number, since it is larger than the sum of its proper divisors (3106922).

6213838 is a wasteful number, since it uses less digits than its factorization.

6213838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106921.

The product of its digits is 6912, while the sum is 31.

The square root of 6213838 is about 2492.7571081034. The cubic root of 6213838 is about 183.8456290298.

The spelling of 6213838 in words is "six million, two hundred thirteen thousand, eight hundred thirty-eight".