6421374 has 36 divisors (see below), whose sum is σ = 14292096. Its totient is φ = 2083536.

The previous prime is 6421369. The next prime is 6421403. The reversal of 6421374 is 4731246.

6421374 is a `hidden beast` number, since 642 + 13 + 7 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 50499 + ... + 50625.

Almost surely, 2^6421374 is an apocalyptic number.

6421374 is an abundant number, since it is smaller than the sum of its proper divisors (7870722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6421374 is a wasteful number, since it uses less digits than its factorization.

6421374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 185 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 6421374 is about 2534.0430146310. The cubic root of 6421374 is about 185.8700097643.

It can be divided in two parts, 642 and 1374, that added together give a triangular number (2016 = T₆₃).

The spelling of 6421374 in words is "six million, four hundred twenty-one thousand, three hundred seventy-four".