12662550 has 72 divisors (see below), whose sum is σ = 35834760. Its totient is φ = 3196800.

The previous prime is 12662549. The next prime is 12662567. The reversal of 12662550 is 5526621.

12662550 = T₁₁₄₅ + T₁₁₄₆ + ... + T₁₁₆₃.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7810 + ... + 9290.

It is an arithmetic number, because the mean of its divisors is an integer number (497705).

Almost surely, 2^12662550 is an apocalyptic number.

12662550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12662550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17917380).

12662550 is an abundant number, since it is smaller than the sum of its proper divisors (23172210).

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

12662550 is a wasteful number, since it uses less digits than its factorization.

12662550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 12662550 is about 3558.4476952739. The cubic root of 12662550 is about 233.0810993146.

The spelling of 12662550 in words is "twelve million, six hundred sixty-two thousand, five hundred fifty".