85678393 has 4 divisors (see below), whose sum is σ = 86037120. Its totient is φ = 85319668.

The previous prime is 85678379. The next prime is 85678399. The reversal of 85678393 is 39387658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39387658 = 2 ⋅19693829.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85678393 is a prime.

It is a Smith number, since the sum of its digits (49) 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 not an unprimeable number, because it can be changed into a prime (85678399) 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, 179005 + ... + 179482.

It is an arithmetic number, because the mean of its divisors is an integer number (21509280).

Almost surely, 2^85678393 is an apocalyptic number.

It is an amenable number.

85678393 is a deficient number, since it is larger than the sum of its proper divisors (358727).

85678393 is a wasteful number, since it uses less digits than its factorization.

85678393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358726.

The product of its digits is 1088640, while the sum is 49.

The square root of 85678393 is about 9256.2623666359. The cubic root of 85678393 is about 440.8495861145.

The spelling of 85678393 in words is "eighty-five million, six hundred seventy-eight thousand, three hundred ninety-three".