26561642 has 8 divisors (see below), whose sum is σ = 41574816. Its totient is φ = 12703372.

The previous prime is 26561641. The next prime is 26561663. The reversal of 26561642 is 24616562.

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

It is a junction number, because it is equal to n+sod(n) for n = 26561599 and 26561608.

It is not an unprimeable number, because it can be changed into a prime (26561641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288668 + ... + 288759.

It is an arithmetic number, because the mean of its divisors is an integer number (5196852).

Almost surely, 2^26561642 is an apocalyptic number.

26561642 is a deficient number, since it is larger than the sum of its proper divisors (15013174).

26561642 is a wasteful number, since it uses less digits than its factorization.

26561642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577452.

The product of its digits is 17280, while the sum is 32.

The square root of 26561642 is about 5153.7987931234. The cubic root of 26561642 is about 298.3675853713.

The spelling of 26561642 in words is "twenty-six million, five hundred sixty-one thousand, six hundred forty-two".