12655330 has 32 divisors (see below), whose sum is σ = 24552000. Its totient is φ = 4681152.

The previous prime is 12655303. The next prime is 12655333. The reversal of 12655330 is 3355621.

12655330 = 52² + 53² + ... + 336².

It is a happy number.

It is a super-3 number, since 3×12655330³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12655295 and 12655304.

It is not an unprimeable number, because it can be changed into a prime (12655333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7396 + ... + 8944.

It is an arithmetic number, because the mean of its divisors is an integer number (767250).

Almost surely, 2^12655330 is an apocalyptic number.

12655330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12655330 is a deficient number, since it is larger than the sum of its proper divisors (11896670).

12655330 is a wasteful number, since it uses less digits than its factorization.

12655330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 12655330 is about 3557.4330633197. The cubic root of 12655330 is about 233.0367910859.

The spelling of 12655330 in words is "twelve million, six hundred fifty-five thousand, three hundred thirty".