26540664 has 16 divisors (see below), whose sum is σ = 66351720. Its totient is φ = 8846880.

The previous prime is 26540659. The next prime is 26540677. The reversal of 26540664 is 46604562.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552907 + ... + 552954.

Almost surely, 2^26540664 is an apocalyptic number.

26540664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26540664 is an abundant number, since it is smaller than the sum of its proper divisors (39811056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26540664 is a wasteful number, since it uses less digits than its factorization.

26540664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105870 (or 1105866 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 26540664 is about 5151.7631933155. The cubic root of 26540664 is about 298.2890158847.

The spelling of 26540664 in words is "twenty-six million, five hundred forty thousand, six hundred sixty-four".