86645760 has 88 divisors (see below), whose sum is σ = 277180176. Its totient is φ = 23101440.

The previous prime is 86645759. The next prime is 86645771. The reversal of 86645760 is 6754668.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12540 + ... + 18180.

Almost surely, 2^86645760 is an apocalyptic number.

86645760 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86645760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138590088).

86645760 is an abundant number, since it is smaller than the sum of its proper divisors (190534416).

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

86645760 is a wasteful number, since it uses less digits than its factorization.

86645760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669 (or 5651 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 86645760 is about 9308.3704266644. The cubic root of 86645760 is about 442.5025439542.

The spelling of 86645760 in words is "eighty-six million, six hundred forty-five thousand, seven hundred sixty".