86774497 has 2 divisors, whose sum is σ = 86774498. Its totient is φ = 86774496.

The previous prime is 86774461. The next prime is 86774507. The reversal of 86774497 is 79447768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54523456 + 32251041 = 7384^2 + 5679^2 .

It is a cyclic number.

It is not a de Polignac number, because 86774497 - 2¹⁹ = 86250209 is a prime.

It is not a weakly prime, because it can be changed into another prime (86774407) 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, 43387248 + 43387249.

It is an arithmetic number, because the mean of its divisors is an integer number (43387249).

Almost surely, 2^86774497 is an apocalyptic number.

It is an amenable number.

86774497 is a deficient number, since it is larger than the sum of its proper divisors (1).

86774497 is an equidigital number, since it uses as much as digits as its factorization.

86774497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2370816, while the sum is 52.

The square root of 86774497 is about 9315.2829801354. The cubic root of 86774497 is about 442.7215901024.

The spelling of 86774497 in words is "eighty-six million, seven hundred seventy-four thousand, four hundred ninety-seven".