6361644 has 12 divisors (see below), whose sum is σ = 14843864. Its totient is φ = 2120544.

The previous prime is 6361627. The next prime is 6361651. The reversal of 6361644 is 4461636.

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

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

It is a nialpdrome in base 14.

It is a congruent number.

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, 265057 + ... + 265080.

Almost surely, 2^6361644 is an apocalyptic number.

It is an amenable number.

6361644 is an abundant number, since it is smaller than the sum of its proper divisors (8482220).

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

6361644 is a wasteful number, since it uses less digits than its factorization.

6361644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530144 (or 530142 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 6361644 is about 2522.2299657248. The cubic root of 6361644 is about 185.2919082866.

The spelling of 6361644 in words is "six million, three hundred sixty-one thousand, six hundred forty-four".