866474737 has 2 divisors, whose sum is σ = 866474738. Its totient is φ = 866474736.

The previous prime is 866474711. The next prime is 866474773. The reversal of 866474737 is 737474668.

Together with next prime (866474773) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 627803136 + 238671601 = 25056^2 + 15449^2 .

It is a cyclic number.

It is not a de Polignac number, because 866474737 - 2¹¹ = 866472689 is a prime.

It is not a weakly prime, because it can be changed into another prime (866474437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433237368 + 433237369.

It is an arithmetic number, because the mean of its divisors is an integer number (433237369).

Almost surely, 2^866474737 is an apocalyptic number.

It is an amenable number.

866474737 is a deficient number, since it is larger than the sum of its proper divisors (1).

866474737 is an equidigital number, since it uses as much as digits as its factorization.

866474737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4741632, while the sum is 52.

The square root of 866474737 is about 29435.9429439588. The cubic root of 866474737 is about 953.3491162263.

The spelling of 866474737 in words is "eight hundred sixty-six million, four hundred seventy-four thousand, seven hundred thirty-seven".