687484033 has 2 divisors, whose sum is σ = 687484034. Its totient is φ = 687484032.

The previous prime is 687484001. The next prime is 687484051. The reversal of 687484033 is 330484786.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 668325904 + 19158129 = 25852^2 + 4377^2 .

It is a cyclic number.

It is not a de Polignac number, because 687484033 - 2⁵ = 687484001 is a prime.

It is not a weakly prime, because it can be changed into another prime (687484093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343742016 + 343742017.

It is an arithmetic number, because the mean of its divisors is an integer number (343742017).

Almost surely, 2^687484033 is an apocalyptic number.

It is an amenable number.

687484033 is a deficient number, since it is larger than the sum of its proper divisors (1).

687484033 is an equidigital number, since it uses as much as digits as its factorization.

687484033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 687484033 is about 26219.9167237427. The cubic root of 687484033 is about 882.5802511638.

The spelling of 687484033 in words is "six hundred eighty-seven million, four hundred eighty-four thousand, thirty-three".