86702321 has 2 divisors, whose sum is σ = 86702322. Its totient is φ = 86702320.

The previous prime is 86702303. The next prime is 86702323. The reversal of 86702321 is 12320768.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46240000 + 40462321 = 6800^2 + 6361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86702321 is a prime.

Together with 86702323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86702323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43351160 + 43351161.

It is an arithmetic number, because the mean of its divisors is an integer number (43351161).

Almost surely, 2^86702321 is an apocalyptic number.

It is an amenable number.

86702321 is a deficient number, since it is larger than the sum of its proper divisors (1).

86702321 is an equidigital number, since it uses as much as digits as its factorization.

86702321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 86702321 is about 9311.4081104847. The cubic root of 86702321 is about 442.5988092622.

The spelling of 86702321 in words is "eighty-six million, seven hundred two thousand, three hundred twenty-one".