86261761 has 2 divisors, whose sum is σ = 86261762. Its totient is φ = 86261760.

The previous prime is 86261743. The next prime is 86261789. The reversal of 86261761 is 16716268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45697600 + 40564161 = 6760^2 + 6369^2 .

It is a cyclic number.

It is not a de Polignac number, because 86261761 - 2²¹ = 84164609 is a prime.

It is a super-2 number, since 2×86261761² = 14882182821642242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86261761.

It is not a weakly prime, because it can be changed into another prime (86261731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43130880 + 43130881.

It is an arithmetic number, because the mean of its divisors is an integer number (43130881).

It is a Proth number, since it is equal to 5265 ⋅ 2¹⁴ + 1 and 5265 < 2¹⁴.

Almost surely, 2^86261761 is an apocalyptic number.

It is an amenable number.

86261761 is a deficient number, since it is larger than the sum of its proper divisors (1).

86261761 is an equidigital number, since it uses as much as digits as its factorization.

86261761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 86261761 is about 9287.7209798744. The cubic root of 86261761 is about 441.8478776682.

The spelling of 86261761 in words is "eighty-six million, two hundred sixty-one thousand, seven hundred sixty-one".