6121644 has 12 divisors (see below), whose sum is σ = 14283864. Its totient is φ = 2040544.

The previous prime is 6121637. The next prime is 6121651. The reversal of 6121644 is 4461216.

It is an interprime number because it is at equal distance from previous prime (6121637) and next prime (6121651).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255057 + ... + 255080.

It is an arithmetic number, because the mean of its divisors is an integer number (1190322).

Almost surely, 2^6121644 is an apocalyptic number.

It is an amenable number.

6121644 is an abundant number, since it is smaller than the sum of its proper divisors (8162220).

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

6121644 is a wasteful number, since it uses less digits than its factorization.

6121644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510144 (or 510142 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 6121644 is about 2474.1956268654. The cubic root of 6121644 is about 182.9318627159.

The spelling of 6121644 in words is "six million, one hundred twenty-one thousand, six hundred forty-four".