86397768 has 24 divisors (see below), whose sum is σ = 233994150. Its totient is φ = 28799232.

The previous prime is 86397761. The next prime is 86397823. The reversal of 86397768 is 86779368.

It can be written as a sum of positive squares in only one way, i.e., 73307844 + 13089924 = 8562^2 + 3618^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (86397761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 599913 + ... + 600056.

Almost surely, 2^86397768 is an apocalyptic number.

It is an amenable number.

86397768 is an abundant number, since it is smaller than the sum of its proper divisors (147596382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86397768 is a wasteful number, since it uses less digits than its factorization.

86397768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199981 (or 1199974 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 86397768 is about 9295.0399676387. The cubic root of 86397768 is about 442.0799729715.

The spelling of 86397768 in words is "eighty-six million, three hundred ninety-seven thousand, seven hundred sixty-eight".