26455643 has 4 divisors (see below), whose sum is σ = 26703000. Its totient is φ = 26208288.

The previous prime is 26455633. The next prime is 26455691. The reversal of 26455643 is 34655462.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 26455643 - 2⁶ = 26455579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26455603) 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, 123518 + ... + 123731.

It is an arithmetic number, because the mean of its divisors is an integer number (6675750).

Almost surely, 2^26455643 is an apocalyptic number.

26455643 is a deficient number, since it is larger than the sum of its proper divisors (247357).

26455643 is a wasteful number, since it uses less digits than its factorization.

26455643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247356.

The product of its digits is 86400, while the sum is 35.

The square root of 26455643 is about 5143.5049334087. The cubic root of 26455643 is about 297.9701597675.

The spelling of 26455643 in words is "twenty-six million, four hundred fifty-five thousand, six hundred forty-three".