505765667 has 8 divisors (see below), whose sum is σ = 552033792. Its totient is φ = 459545800.

The previous prime is 505765649. The next prime is 505765727. The reversal of 505765667 is 766567505.

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-505765667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505765367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11942 + ... + 33972.

It is an arithmetic number, because the mean of its divisors is an integer number (69004224).

Almost surely, 2^505765667 is an apocalyptic number.

505765667 is a deficient number, since it is larger than the sum of its proper divisors (46268125).

505765667 is a wasteful number, since it uses less digits than its factorization.

505765667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24129.

The product of its (nonzero) digits is 1323000, while the sum is 47.

The square root of 505765667 is about 22489.2344689631. The cubic root of 505765667 is about 796.7396825250.

The spelling of 505765667 in words is "five hundred five million, seven hundred sixty-five thousand, six hundred sixty-seven".