26990066 has 4 divisors (see below), whose sum is σ = 40485102. Its totient is φ = 13495032.

The previous prime is 26990059. The next prime is 26990077. The reversal of 26990066 is 66009962.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66009962 = 2 ⋅33004981.

It can be written as a sum of positive squares in only one way, i.e., 14280841 + 12709225 = 3779^2 + 3565^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6747515 + ... + 6747518.

Almost surely, 2^26990066 is an apocalyptic number.

26990066 is a deficient number, since it is larger than the sum of its proper divisors (13495036).

26990066 is a wasteful number, since it uses less digits than its factorization.

26990066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13495035.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 26990066 is about 5195.1964351697. The cubic root of 26990066 is about 299.9632028942.

The spelling of 26990066 in words is "twenty-six million, nine hundred ninety thousand, sixty-six".