84206761 has 2 divisors, whose sum is σ = 84206762. Its totient is φ = 84206760.

The previous prime is 84206719. The next prime is 84206777. The reversal of 84206761 is 16760248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82246761 + 1960000 = 9069^2 + 1400^2 .

It is a cyclic number.

It is not a de Polignac number, because 84206761 - 2¹⁵ = 84173993 is a prime.

It is a super-2 number, since 2×84206761² = 14181557196222242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84206701) 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, 42103380 + 42103381.

It is an arithmetic number, because the mean of its divisors is an integer number (42103381).

Almost surely, 2^84206761 is an apocalyptic number.

It is an amenable number.

84206761 is a deficient number, since it is larger than the sum of its proper divisors (1).

84206761 is an equidigital number, since it uses as much as digits as its factorization.

84206761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 84206761 is about 9176.4241946414. The cubic root of 84206761 is about 438.3109504234.

The spelling of 84206761 in words is "eighty-four million, two hundred six thousand, seven hundred sixty-one".