6361664 has 14 divisors (see below), whose sum is σ = 12624054. Its totient is φ = 3180800.

The previous prime is 6361661. The next prime is 6361679. The reversal of 6361664 is 4661636.

It can be written as a sum of positive squares in only one way, i.e., 5721664 + 640000 = 2392^2 + 800^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 6361664.

It is not an unprimeable number, because it can be changed into a prime (6361661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49637 + ... + 49764.

Almost surely, 2^6361664 is an apocalyptic number.

6361664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6361664 is a deficient number, since it is larger than the sum of its proper divisors (6262390).

6361664 is an equidigital number, since it uses as much as digits as its factorization.

6361664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99413 (or 99403 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 6361664 is about 2522.2339304672. The cubic root of 6361664 is about 185.2921024625.

The spelling of 6361664 in words is "six million, three hundred sixty-one thousand, six hundred sixty-four".