26642651 has 4 divisors (see below), whose sum is σ = 30448752. Its totient is φ = 22836552.

The previous prime is 26642641. The next prime is 26642653. The reversal of 26642651 is 15624662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26642651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26642653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1903040 + ... + 1903053.

It is an arithmetic number, because the mean of its divisors is an integer number (7612188).

Almost surely, 2^26642651 is an apocalyptic number.

26642651 is a deficient number, since it is larger than the sum of its proper divisors (3806101).

26642651 is an equidigital number, since it uses as much as digits as its factorization.

26642651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806100.

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

The square root of 26642651 is about 5161.6519642456. The cubic root of 26642651 is about 298.6706028980.

The spelling of 26642651 in words is "twenty-six million, six hundred forty-two thousand, six hundred fifty-one".