86578797 has 4 divisors (see below), whose sum is σ = 115438400. Its totient is φ = 57719196.

The previous prime is 86578787. The next prime is 86578799. The reversal of 86578797 is 79787568.

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.

It is not a de Polignac number, because 86578797 - 2⁴ = 86578781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86578799) 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, 14429797 + ... + 14429802.

It is an arithmetic number, because the mean of its divisors is an integer number (28859600).

Almost surely, 2^86578797 is an apocalyptic number.

It is an amenable number.

86578797 is a deficient number, since it is larger than the sum of its proper divisors (28859603).

86578797 is a wasteful number, since it uses less digits than its factorization.

86578797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28859602.

The product of its digits is 5927040, while the sum is 57.

The square root of 86578797 is about 9304.7728075434. The cubic root of 86578797 is about 442.3885205463.

The spelling of 86578797 in words is "eighty-six million, five hundred seventy-eight thousand, seven hundred ninety-seven".