26663444 has 6 divisors (see below), whose sum is σ = 46661034. Its totient is φ = 13331720.

The previous prime is 26663443. The next prime is 26663447. The reversal of 26663444 is 44436662.

It can be written as a sum of positive squares in only one way, i.e., 15507844 + 11155600 = 3938^2 + 3340^2 .

It is a super-2 number, since 2×26663444² = 1421878491882272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26663443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332927 + ... + 3332934.

It is an arithmetic number, because the mean of its divisors is an integer number (7776839).

Almost surely, 2^26663444 is an apocalyptic number.

It is an amenable number.

26663444 is a deficient number, since it is larger than the sum of its proper divisors (19997590).

26663444 is a wasteful number, since it uses less digits than its factorization.

26663444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6665865 (or 6665863 counting only the distinct ones).

The product of its digits is 82944, while the sum is 35.

The square root of 26663444 is about 5163.6657521571. The cubic root of 26663444 is about 298.7482808909.

The spelling of 26663444 in words is "twenty-six million, six hundred sixty-three thousand, four hundred forty-four".