86704566 has 64 divisors (see below), whose sum is σ = 194116608. Its totient is φ = 25648128.

The previous prime is 86704547. The next prime is 86704567. The reversal of 86704566 is 66540768.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86704567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245446 + ... + 245798.

It is an arithmetic number, because the mean of its divisors is an integer number (3033072).

Almost surely, 2^86704566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86704566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97058304).

86704566 is an abundant number, since it is smaller than the sum of its proper divisors (107412042).

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

86704566 is a wasteful number, since it uses less digits than its factorization.

86704566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485.

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

The square root of 86704566 is about 9311.5286607517. The cubic root of 86704566 is about 442.6026293281.

The spelling of 86704566 in words is "eighty-six million, seven hundred four thousand, five hundred sixty-six".