78066026 has 4 divisors (see below), whose sum is σ = 117099042. Its totient is φ = 39033012.

The previous prime is 78066007. The next prime is 78066047. The reversal of 78066026 is 62066087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62066087 = 41 ⋅1513807.

It can be written as a sum of positive squares in only one way, i.e., 46717225 + 31348801 = 6835^2 + 5599^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19516505 + ... + 19516508.

Almost surely, 2^78066026 is an apocalyptic number.

78066026 is a deficient number, since it is larger than the sum of its proper divisors (39033016).

78066026 is a wasteful number, since it uses less digits than its factorization.

78066026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39033015.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 78066026 is about 8835.4980617960. The cubic root of 78066026 is about 427.3863925286.

The spelling of 78066026 in words is "seventy-eight million, sixty-six thousand, twenty-six".