505504678 has 12 divisors (see below), whose sum is σ = 882054252. Its totient is φ = 216644820.

The previous prime is 505504661. The next prime is 505504679. The reversal of 505504678 is 876405505.

It is a self number, because there is not a number n which added to its sum of digits gives 505504678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505504679) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2579008 + ... + 2579203.

It is an arithmetic number, because the mean of its divisors is an integer number (73504521).

Almost surely, 2^505504678 is an apocalyptic number.

505504678 is a deficient number, since it is larger than the sum of its proper divisors (376549574).

505504678 is a wasteful number, since it uses less digits than its factorization.

505504678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5158227 (or 5158220 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 505504678 is about 22483.4311883218. The cubic root of 505504678 is about 796.6026124123.

The spelling of 505504678 in words is "five hundred five million, five hundred four thousand, six hundred seventy-eight".