6862421 has 2 divisors, whose sum is σ = 6862422. Its totient is φ = 6862420.

The previous prime is 6862417. The next prime is 6862433. The reversal of 6862421 is 1242686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6027025 + 835396 = 2455^2 + 914^2 .

It is a cyclic number.

It is not a de Polignac number, because 6862421 - 2² = 6862417 is a prime.

It is a super-3 number, since 3×6862421³ (a number of 21 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6862451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3431210 + 3431211.

It is an arithmetic number, because the mean of its divisors is an integer number (3431211).

Almost surely, 2^6862421 is an apocalyptic number.

It is an amenable number.

6862421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6862421 is an equidigital number, since it uses as much as digits as its factorization.

6862421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 6862421 is about 2619.6223010197. The cubic root of 6862421 is about 190.0315829308.

The spelling of 6862421 in words is "six million, eight hundred sixty-two thousand, four hundred twenty-one".