86078061 has 12 divisors (see below), whose sum is σ = 128622780. Its totient is φ = 55406400.

The previous prime is 86078017. The next prime is 86078071. The reversal of 86078061 is 16087068.

It can be written as a sum of positive squares in 2 ways, for example, as 41602500 + 44475561 = 6450^2 + 6669^2 .

It is not a de Polignac number, because 86078061 - 2⁶ = 86077997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86078011) 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 11 ways as a sum of consecutive naturals, for example, 164640 + ... + 165161.

It is an arithmetic number, because the mean of its divisors is an integer number (10718565).

Almost surely, 2^86078061 is an apocalyptic number.

It is an amenable number.

86078061 is a deficient number, since it is larger than the sum of its proper divisors (42544719).

86078061 is a wasteful number, since it uses less digits than its factorization.

86078061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329836 (or 329833 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 86078061 is about 9277.8263079236. The cubic root of 86078061 is about 441.5340068809.

The spelling of 86078061 in words is "eighty-six million, seventy-eight thousand, sixty-one".