78012068 has 6 divisors (see below), whose sum is σ = 136521126. Its totient is φ = 39006032.

The previous prime is 78012061. The next prime is 78012071. The reversal of 78012068 is 86021087.

It can be written as a sum of positive squares in only one way, i.e., 67108864 + 10903204 = 8192^2 + 3302^2 .

It is not an unprimeable number, because it can be changed into a prime (78012061) by changing a digit.

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, 9751505 + ... + 9751512.

It is an arithmetic number, because the mean of its divisors is an integer number (22753521).

Almost surely, 2^78012068 is an apocalyptic number.

It is an amenable number.

78012068 is a deficient number, since it is larger than the sum of its proper divisors (58509058).

78012068 is a wasteful number, since it uses less digits than its factorization.

78012068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19503021 (or 19503019 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 78012068 is about 8832.4440558659. Note that the first 3 decimals coincide. The cubic root of 78012068 is about 427.2879022664.

The spelling of 78012068 in words is "seventy-eight million, twelve thousand, sixty-eight".