26506673 has 4 divisors (see below), whose sum is σ = 26525040. Its totient is φ = 26488308.

The previous prime is 26506663. The next prime is 26506679. The reversal of 26506673 is 37660562.

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: 37660562 = 2 ⋅18830281.

It is a cyclic number.

It is not a de Polignac number, because 26506673 - 2⁴ = 26506657 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 (26506679) 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, 6815 + ... + 9972.

It is an arithmetic number, because the mean of its divisors is an integer number (6631260).

Almost surely, 2^26506673 is an apocalyptic number.

It is an amenable number.

26506673 is a deficient number, since it is larger than the sum of its proper divisors (18367).

26506673 is a wasteful number, since it uses less digits than its factorization.

26506673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18366.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 26506673 is about 5148.4631687524. The cubic root of 26506673 is about 298.1616205105.

The spelling of 26506673 in words is "twenty-six million, five hundred six thousand, six hundred seventy-three".