86705538 has 16 divisors (see below), whose sum is σ = 180950976. Its totient is φ = 27645200.

The previous prime is 86705537. The next prime is 86705539. The reversal of 86705538 is 83550768.

It is an interprime number because it is at equal distance from previous prime (86705537) and next prime (86705539).

It is a self number, because there is not a number n which added to its sum of digits gives 86705538.

It is not an unprimeable number, because it can be changed into a prime (86705533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314013 + ... + 314288.

It is an arithmetic number, because the mean of its divisors is an integer number (11309436).

Almost surely, 2^86705538 is an apocalyptic number.

86705538 is an abundant number, since it is smaller than the sum of its proper divisors (94245438).

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

86705538 is a wasteful number, since it uses less digits than its factorization.

86705538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628329.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 86705538 is about 9311.5808539689. The cubic root of 86705538 is about 442.6042832516.

The spelling of 86705538 in words is "eighty-six million, seven hundred five thousand, five hundred thirty-eight".