78601065 has 16 divisors (see below), whose sum is σ = 125884800. Its totient is φ = 41879552.

The previous prime is 78601063. The next prime is 78601069. The reversal of 78601065 is 56010687.

It is a cyclic number.

It is not a de Polignac number, because 78601065 - 2¹ = 78601063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78601063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19276 + ... + 22994.

It is an arithmetic number, because the mean of its divisors is an integer number (7867800).

Almost surely, 2^78601065 is an apocalyptic number.

It is an amenable number.

78601065 is a deficient number, since it is larger than the sum of its proper divisors (47283735).

78601065 is a wasteful number, since it uses less digits than its factorization.

78601065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 78601065 is about 8865.7241666995. The cubic root of 78601065 is about 428.3605591998.

The spelling of 78601065 in words is "seventy-eight million, six hundred one thousand, sixty-five".