78159068 has 12 divisors (see below), whose sum is σ = 147299880. Its totient is φ = 36073392.

The previous prime is 78159061. The next prime is 78159101. The reversal of 78159068 is 86095187.

It is a happy number.

It is a super-2 number, since 2×78159068² = 12217679821257248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78159061) 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 in 3 ways as a sum of consecutive naturals, for example, 751478 + ... + 751581.

It is an arithmetic number, because the mean of its divisors is an integer number (12274990).

Almost surely, 2^78159068 is an apocalyptic number.

It is an amenable number.

78159068 is a deficient number, since it is larger than the sum of its proper divisors (69140812).

78159068 is a wasteful number, since it uses less digits than its factorization.

78159068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503076 (or 1503074 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 78159068 is about 8840.7617318871. The cubic root of 78159068 is about 427.5561167969.

The spelling of 78159068 in words is "seventy-eight million, one hundred fifty-nine thousand, sixty-eight".