507487649 has 4 divisors (see below), whose sum is σ = 507991620. Its totient is φ = 506983680.

The previous prime is 507487583. The next prime is 507487657. The reversal of 507487649 is 946784705.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70677649 + 436810000 = 8407^2 + 20900^2 .

It is a cyclic number.

It is not a de Polignac number, because 507487649 - 2²⁴ = 490710433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 507487597 and 507487606.

It is not an unprimeable number, because it can be changed into a prime (507487699) 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 in 3 ways as a sum of consecutive naturals, for example, 250472 + ... + 252489.

It is an arithmetic number, because the mean of its divisors is an integer number (126997905).

Almost surely, 2^507487649 is an apocalyptic number.

It is an amenable number.

507487649 is a deficient number, since it is larger than the sum of its proper divisors (503971).

507487649 is a wasteful number, since it uses less digits than its factorization.

507487649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503970.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The square root of 507487649 is about 22527.4865220246. The cubic root of 507487649 is about 797.6428789841.

The spelling of 507487649 in words is "five hundred seven million, four hundred eighty-seven thousand, six hundred forty-nine".