507686449 has 2 divisors, whose sum is σ = 507686450. Its totient is φ = 507686448.

The previous prime is 507686447. The next prime is 507686471. The reversal of 507686449 is 944686705.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289238049 + 218448400 = 17007^2 + 14780^2 .

It is a cyclic number.

It is not a de Polignac number, because 507686449 - 2¹ = 507686447 is a prime.

Together with 507686447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (507686447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253843224 + 253843225.

It is an arithmetic number, because the mean of its divisors is an integer number (253843225).

Almost surely, 2^507686449 is an apocalyptic number.

It is an amenable number.

507686449 is a deficient number, since it is larger than the sum of its proper divisors (1).

507686449 is an equidigital number, since it uses as much as digits as its factorization.

507686449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 507686449 is about 22531.8984774919. The cubic root of 507686449 is about 797.7470199113.

The spelling of 507686449 in words is "five hundred seven million, six hundred eighty-six thousand, four hundred forty-nine".