78065294 has 4 divisors (see below), whose sum is σ = 117097944. Its totient is φ = 39032646.

The previous prime is 78065257. The next prime is 78065297. The reversal of 78065294 is 49256087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49256087 = 23 ⋅2141569.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78065297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19516322 + ... + 19516325.

It is an arithmetic number, because the mean of its divisors is an integer number (29274486).

Almost surely, 2^78065294 is an apocalyptic number.

78065294 is a deficient number, since it is larger than the sum of its proper divisors (39032650).

78065294 is a wasteful number, since it uses less digits than its factorization.

78065294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39032649.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 78065294 is about 8835.4566378880. The cubic root of 78065294 is about 427.3850567029.

The spelling of 78065294 in words is "seventy-eight million, sixty-five thousand, two hundred ninety-four".