86556078 has 72 divisors (see below), whose sum is σ = 227774352. Its totient is φ = 23265792.

The previous prime is 86556073. The next prime is 86556101. The reversal of 86556078 is 87065568.

86556078 is a `hidden beast` number, since 86 + 5 + 560 + 7 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86556073) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35226 + ... + 37602.

Almost surely, 2^86556078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86556078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113887176).

86556078 is an abundant number, since it is smaller than the sum of its proper divisors (141218274).

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

86556078 is a wasteful number, since it uses less digits than its factorization.

86556078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426 (or 2406 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 86556078 is about 9303.5519023650. The cubic root of 86556078 is about 442.3498216793.

The spelling of 86556078 in words is "eighty-six million, five hundred fifty-six thousand, seventy-eight".