26421065 has 8 divisors (see below), whose sum is σ = 34587648. Its totient is φ = 19215280.

The previous prime is 26421061. The next prime is 26421067. The reversal of 26421065 is 56012462.

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

It is not a de Polignac number, because 26421065 - 2² = 26421061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26421061) 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, 240137 + ... + 240246.

It is an arithmetic number, because the mean of its divisors is an integer number (4323456).

Almost surely, 2^26421065 is an apocalyptic number.

It is an amenable number.

26421065 is a deficient number, since it is larger than the sum of its proper divisors (8166583).

26421065 is a wasteful number, since it uses less digits than its factorization.

26421065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480399.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 26421065 is about 5140.1425077521. The cubic root of 26421065 is about 297.8402857204.

The spelling of 26421065 in words is "twenty-six million, four hundred twenty-one thousand, sixty-five".