505948687 has 8 divisors (see below), whose sum is σ = 528251904. Its totient is φ = 483670968.

The previous prime is 505948673. The next prime is 505948787. The reversal of 505948687 is 786849505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505948687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505948637) 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 in 7 ways as a sum of consecutive naturals, for example, 42118 + ... + 52780.

It is an arithmetic number, because the mean of its divisors is an integer number (66031488).

Almost surely, 2^505948687 is an apocalyptic number.

505948687 is a deficient number, since it is larger than the sum of its proper divisors (22303217).

505948687 is a wasteful number, since it uses less digits than its factorization.

505948687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12749.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The square root of 505948687 is about 22493.3031589404. The cubic root of 505948687 is about 796.8357755846.

The spelling of 505948687 in words is "five hundred five million, nine hundred forty-eight thousand, six hundred eighty-seven".