26664057 has 24 divisors (see below), whose sum is σ = 44680896. Its totient is φ = 15006816.

The previous prime is 26664023. The next prime is 26664083. The reversal of 26664057 is 75046662.

It is not a de Polignac number, because 26664057 - 2¹⁶ = 26598521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26664017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1063 + ... + 7379.

It is an arithmetic number, because the mean of its divisors is an integer number (1861704).

Almost surely, 2^26664057 is an apocalyptic number.

It is an amenable number.

26664057 is a deficient number, since it is larger than the sum of its proper divisors (18016839).

26664057 is a wasteful number, since it uses less digits than its factorization.

26664057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6397 (or 6394 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 26664057 is about 5163.7251088725. The cubic root of 26664057 is about 298.7505703087.

The spelling of 26664057 in words is "twenty-six million, six hundred sixty-four thousand, fifty-seven".