687422753 has 2 divisors, whose sum is σ = 687422754. Its totient is φ = 687422752.

The previous prime is 687422719. The next prime is 687422759. The reversal of 687422753 is 357224786.

687422753 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402724624 + 284698129 = 20068^2 + 16873^2 .

It is a cyclic number.

It is not a de Polignac number, because 687422753 - 2¹² = 687418657 is a prime.

It is not a weakly prime, because it can be changed into another prime (687422759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343711376 + 343711377.

It is an arithmetic number, because the mean of its divisors is an integer number (343711377).

Almost surely, 2^687422753 is an apocalyptic number.

It is an amenable number.

687422753 is a deficient number, since it is larger than the sum of its proper divisors (1).

687422753 is an equidigital number, since it uses as much as digits as its factorization.

687422753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 44.

The square root of 687422753 is about 26218.7481203813. The cubic root of 687422753 is about 882.5540269791.

The spelling of 687422753 in words is "six hundred eighty-seven million, four hundred twenty-two thousand, seven hundred fifty-three".