26961001 has 4 divisors (see below), whose sum is σ = 27363472. Its totient is φ = 26558532.

The previous prime is 26960959. The next prime is 26961007. The reversal of 26961001 is 10016962.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10016962 = 2 ⋅5008481.

It is not a de Polignac number, because 26961001 - 2⁹ = 26960489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26961007) 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, 201135 + ... + 201268.

It is an arithmetic number, because the mean of its divisors is an integer number (6840868).

Almost surely, 2^26961001 is an apocalyptic number.

It is an amenable number.

26961001 is a deficient number, since it is larger than the sum of its proper divisors (402471).

26961001 is an equidigital number, since it uses as much as digits as its factorization.

26961001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402470.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 26961001 is about 5192.3983861025. The cubic root of 26961001 is about 299.8554896596.

Adding to 26961001 its reverse (10016962), we get a palindrome (36977963).

The spelling of 26961001 in words is "twenty-six million, nine hundred sixty-one thousand, one".