26664497 has 8 divisors (see below), whose sum is σ = 27234144. Its totient is φ = 26100928.

The previous prime is 26664487. The next prime is 26664499. The reversal of 26664497 is 79446662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26664497 - 2⁸ = 26664241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26664499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7958 + ... + 10800.

It is an arithmetic number, because the mean of its divisors is an integer number (3404268).

Almost surely, 2^26664497 is an apocalyptic number.

It is an amenable number.

26664497 is a deficient number, since it is larger than the sum of its proper divisors (569647).

26664497 is a wasteful number, since it uses less digits than its factorization.

26664497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039.

The product of its digits is 435456, while the sum is 44.

The square root of 26664497 is about 5163.7677135983. The cubic root of 26664497 is about 298.7522135886.

The spelling of 26664497 in words is "twenty-six million, six hundred sixty-four thousand, four hundred ninety-seven".