78135367 has 4 divisors (see below), whose sum is σ = 80829720. Its totient is φ = 75441016.

The previous prime is 78135361. The next prime is 78135371. The reversal of 78135367 is 76353187.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76353187 = 71 ⋅1075397.

It is a cyclic number.

It is not a de Polignac number, because 78135367 - 2¹⁵ = 78102599 is a prime.

It is a super-2 number, since 2×78135367² = 12210271152449378, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78135361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347133 + ... + 1347190.

It is an arithmetic number, because the mean of its divisors is an integer number (20207430).

Almost surely, 2^78135367 is an apocalyptic number.

78135367 is a deficient number, since it is larger than the sum of its proper divisors (2694353).

78135367 is a wasteful number, since it uses less digits than its factorization.

78135367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694352.

The product of its digits is 105840, while the sum is 40.

The square root of 78135367 is about 8839.4211914582. The cubic root of 78135367 is about 427.5128949749.

The spelling of 78135367 in words is "seventy-eight million, one hundred thirty-five thousand, three hundred sixty-seven".