26320664 has 8 divisors (see below), whose sum is σ = 49351260. Its totient is φ = 13160328.

The previous prime is 26320663. The next prime is 26320669. The reversal of 26320664 is 46602362.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26320663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1645034 + ... + 1645049.

Almost surely, 2^26320664 is an apocalyptic number.

It is an amenable number.

26320664 is a deficient number, since it is larger than the sum of its proper divisors (23030596).

26320664 is a wasteful number, since it uses less digits than its factorization.

26320664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290089 (or 3290085 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 26320664 is about 5130.3668484817. The cubic root of 26320664 is about 297.4625388888.

The spelling of 26320664 in words is "twenty-six million, three hundred twenty thousand, six hundred sixty-four".