86840737 has 2 divisors, whose sum is σ = 86840738. Its totient is φ = 86840736.

The previous prime is 86840717. The next prime is 86840753. The reversal of 86840737 is 73704868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52548001 + 34292736 = 7249^2 + 5856^2 .

It is a cyclic number.

It is not a de Polignac number, because 86840737 - 2⁷ = 86840609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86840693 and 86840702.

It is not a weakly prime, because it can be changed into another prime (86840717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43420368 + 43420369.

It is an arithmetic number, because the mean of its divisors is an integer number (43420369).

Almost surely, 2^86840737 is an apocalyptic number.

It is an amenable number.

86840737 is a deficient number, since it is larger than the sum of its proper divisors (1).

86840737 is an equidigital number, since it uses as much as digits as its factorization.

86840737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 86840737 is about 9318.8377494192. The cubic root of 86840737 is about 442.8342131282.

The spelling of 86840737 in words is "eighty-six million, eight hundred forty thousand, seven hundred thirty-seven".