26648649 has 16 divisors (see below), whose sum is σ = 39560640. Its totient is φ = 17729280.

The previous prime is 26648603. The next prime is 26648681. The reversal of 26648649 is 94684662.

It is not a de Polignac number, because 26648649 - 2¹³ = 26640457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26648689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21289 + ... + 22505.

It is an arithmetic number, because the mean of its divisors is an integer number (2472540).

Almost surely, 2^26648649 is an apocalyptic number.

It is an amenable number.

26648649 is a deficient number, since it is larger than the sum of its proper divisors (12911991).

26648649 is a wasteful number, since it uses less digits than its factorization.

26648649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2031 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 26648649 is about 5162.2329470879. The cubic root of 26648649 is about 298.6930142296.

The spelling of 26648649 in words is "twenty-six million, six hundred forty-eight thousand, six hundred forty-nine".