26661343 has 4 divisors (see below), whose sum is σ = 26982648. Its totient is φ = 26340040.

The previous prime is 26661319. The next prime is 26661359. The reversal of 26661343 is 34316662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34316662 = 2 ⋅17158331.

It is a cyclic number.

It is not a de Polignac number, because 26661343 - 2⁵ = 26661311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26661043) 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, 160528 + ... + 160693.

It is an arithmetic number, because the mean of its divisors is an integer number (6745662).

Almost surely, 2^26661343 is an apocalyptic number.

26661343 is a deficient number, since it is larger than the sum of its proper divisors (321305).

26661343 is an equidigital number, since it uses as much as digits as its factorization.

26661343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321304.

The product of its digits is 15552, while the sum is 31.

The square root of 26661343 is about 5163.4623074058. The cubic root of 26661343 is about 298.7404338598.

The spelling of 26661343 in words is "twenty-six million, six hundred sixty-one thousand, three hundred forty-three".