12961654 has 4 divisors (see below), whose sum is σ = 19442484. Its totient is φ = 6480826.

The previous prime is 12961621. The next prime is 12961657. The reversal of 12961654 is 45616921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45616921 = 7 ⋅6516703.

It is an alternating number because its digits alternate between odd and even.

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 as a sum of consecutive naturals, namely, 3240412 + ... + 3240415.

It is an arithmetic number, because the mean of its divisors is an integer number (4860621).

Almost surely, 2^12961654 is an apocalyptic number.

12961654 is a deficient number, since it is larger than the sum of its proper divisors (6480830).

12961654 is an equidigital number, since it uses as much as digits as its factorization.

12961654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480829.

The product of its digits is 12960, while the sum is 34.

The square root of 12961654 is about 3600.2297148932. The cubic root of 12961654 is about 234.9020506239.

The spelling of 12961654 in words is "twelve million, nine hundred sixty-one thousand, six hundred fifty-four".