86720653 has 2 divisors, whose sum is σ = 86720654. Its totient is φ = 86720652.

The previous prime is 86720639. The next prime is 86720681. The reversal of 86720653 is 35602768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81324324 + 5396329 = 9018^2 + 2323^2 .

It is a cyclic number.

It is not a de Polignac number, because 86720653 - 2²⁵ = 53166221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86720633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43360326 + 43360327.

It is an arithmetic number, because the mean of its divisors is an integer number (43360327).

Almost surely, 2^86720653 is an apocalyptic number.

It is an amenable number.

86720653 is a deficient number, since it is larger than the sum of its proper divisors (1).

86720653 is an equidigital number, since it uses as much as digits as its factorization.

86720653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 86720653 is about 9312.3924423319. The cubic root of 86720653 is about 442.6300008516.

The spelling of 86720653 in words is "eighty-six million, seven hundred twenty thousand, six hundred fifty-three".