78068636 has 6 divisors (see below), whose sum is σ = 136620120. Its totient is φ = 39034316.

The previous prime is 78068621. The next prime is 78068651. The reversal of 78068636 is 63686087.

It is an interprime number because it is at equal distance from previous prime (78068621) and next prime (78068651).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9758576 + ... + 9758583.

It is an arithmetic number, because the mean of its divisors is an integer number (22770020).

Almost surely, 2^78068636 is an apocalyptic number.

It is an amenable number.

78068636 is a deficient number, since it is larger than the sum of its proper divisors (58551484).

78068636 is a wasteful number, since it uses less digits than its factorization.

78068636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19517163 (or 19517161 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 78068636 is about 8835.6457602147. The cubic root of 78068636 is about 427.3911554458.

The spelling of 78068636 in words is "seventy-eight million, sixty-eight thousand, six hundred thirty-six".