6421464 has 128 divisors (see below), whose sum is σ = 21196800. Its totient is φ = 1762560.

The previous prime is 6421421. The next prime is 6421477. The reversal of 6421464 is 4641246.

6421464 is a `hidden beast` number, since 642 + 14 + 6 + 4 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46804 + ... + 46940.

It is an arithmetic number, because the mean of its divisors is an integer number (165600).

Almost surely, 2^6421464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6421464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10598400).

6421464 is an abundant number, since it is smaller than the sum of its proper divisors (14775336).

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

6421464 is a wasteful number, since it uses less digits than its factorization.

6421464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 180 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 6421464 is about 2534.0607727519. The cubic root of 6421464 is about 185.8708781258.

It can be divided in two parts, 64 and 21464, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 6421464 in words is "six million, four hundred twenty-one thousand, four hundred sixty-four".