86286890 has 32 divisors (see below), whose sum is σ = 161488080. Its totient is φ = 33155584.

The previous prime is 86286839. The next prime is 86286929. The reversal of 86286890 is 9868268.

It can be written as a sum of positive squares in 8 ways, for example, as 31393609 + 54893281 = 5603^2 + 7409^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66932 + ... + 68208.

Almost surely, 2^86286890 is an apocalyptic number.

86286890 is a deficient number, since it is larger than the sum of its proper divisors (75201190).

86286890 is a wasteful number, since it uses less digits than its factorization.

86286890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 86286890 is about 9289.0736890177. The cubic root of 86286890 is about 441.8907785519.

The spelling of 86286890 in words is "eighty-six million, two hundred eighty-six thousand, eight hundred ninety".