12621608 has 8 divisors (see below), whose sum is σ = 23665530. Its totient is φ = 6310800.

The previous prime is 12621607. The next prime is 12621611. The reversal of 12621608 is 80612621.

It can be written as a sum of positive squares in only one way, i.e., 12264004 + 357604 = 3502^2 + 598^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12621607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 788843 + ... + 788858.

Almost surely, 2^12621608 is an apocalyptic number.

It is an amenable number.

12621608 is a deficient number, since it is larger than the sum of its proper divisors (11043922).

12621608 is a wasteful number, since it uses less digits than its factorization.

12621608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577707 (or 1577703 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 12621608 is about 3552.6902482485. The cubic root of 12621608 is about 232.8296199563.

The spelling of 12621608 in words is "twelve million, six hundred twenty-one thousand, six hundred eight".