12961653 has 8 divisors (see below), whose sum is σ = 17327328. Its totient is φ = 8618544.

The previous prime is 12961621. The next prime is 12961657. The reversal of 12961653 is 35616921.

It is a happy number.

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

It is not a de Polignac number, because 12961653 - 2⁵ = 12961621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12961657) 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, 4251 + ... + 6632.

It is an arithmetic number, because the mean of its divisors is an integer number (2165916).

Almost surely, 2^12961653 is an apocalyptic number.

It is an amenable number.

12961653 is a deficient number, since it is larger than the sum of its proper divisors (4365675).

12961653 is a wasteful number, since it uses less digits than its factorization.

12961653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11283.

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

The square root of 12961653 is about 3600.2295760132. The cubic root of 12961653 is about 234.9020445829.

Adding to 12961653 its sum of digits (33), we get a triangular number (12961686 = T₅₀₉₁).

The spelling of 12961653 in words is "twelve million, nine hundred sixty-one thousand, six hundred fifty-three".