6664450 has 24 divisors (see below), whose sum is σ = 13350708. Its totient is φ = 2460480.

The previous prime is 6664447. The next prime is 6664453. The reversal of 6664450 is 544666.

6664450 = T₅₆₅ + T₅₆₆ + ... + T₆₀₃.

It is an interprime number because it is at equal distance from previous prime (6664447) and next prime (6664453).

It can be written as a sum of positive squares in 6 ways, for example, as 349281 + 6315169 = 591^2 + 2513^2 .

It is not an unprimeable number, because it can be changed into a prime (6664453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4477 + ... + 5776.

Almost surely, 2^6664450 is an apocalyptic number.

6664450 is an abundant number, since it is smaller than the sum of its proper divisors (6686258).

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

6664450 is a wasteful number, since it uses less digits than its factorization.

6664450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10278 (or 10273 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 6664450 is about 2581.5596061296. The cubic root of 6664450 is about 188.1863438319.

It can be divided in two parts, 66 and 64450, that added together give a square (64516 = 254²).

The spelling of 6664450 in words is "six million, six hundred sixty-four thousand, four hundred fifty".