26648631 has 12 divisors (see below), whose sum is σ = 38749360. Its totient is φ = 17647200.

The previous prime is 26648603. The next prime is 26648681. The reversal of 26648631 is 13684662.

26648631 is a `hidden beast` number, since 2 + 6 + 648 + 6 + 3 + 1 = 666.

It is not a de Polignac number, because 26648631 - 2²¹ = 24551479 is a prime.

It is a super-2 number, since 2×26648631² = 1420299068348322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26648681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8446 + ... + 11163.

Almost surely, 2^26648631 is an apocalyptic number.

26648631 is a deficient number, since it is larger than the sum of its proper divisors (12100729).

26648631 is a wasteful number, since it uses less digits than its factorization.

26648631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19766 (or 19763 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 26648631 is about 5162.2312036560. The cubic root of 26648631 is about 298.6929469782.

The spelling of 26648631 in words is "twenty-six million, six hundred forty-eight thousand, six hundred thirty-one".