12953661 has 8 divisors (see below), whose sum is σ = 19738944. Its totient is φ = 7402080.

The previous prime is 12953659. The next prime is 12953701. The reversal of 12953661 is 16635921.

It is a happy number.

12953661 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12953661 - 2¹ = 12953659 is a prime.

12953661 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12953651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308400 + ... + 308441.

It is an arithmetic number, because the mean of its divisors is an integer number (2467368).

Almost surely, 2^12953661 is an apocalyptic number.

It is an amenable number.

12953661 is a deficient number, since it is larger than the sum of its proper divisors (6785283).

12953661 is an equidigital number, since it uses as much as digits as its factorization.

12953661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616851.

The product of its digits is 9720, while the sum is 33.

The square root of 12953661 is about 3599.1194756496. The cubic root of 12953661 is about 234.8537553943.

The spelling of 12953661 in words is "twelve million, nine hundred fifty-three thousand, six hundred sixty-one".