505747605 has 32 divisors (see below), whose sum is σ = 929226240. Its totient is φ = 232303680.

The previous prime is 505747597. The next prime is 505747631. The reversal of 505747605 is 506747505.

It is not a de Polignac number, because 505747605 - 2³ = 505747597 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 77527 + ... + 83796.

It is an arithmetic number, because the mean of its divisors is an integer number (29038320).

Almost surely, 2^505747605 is an apocalyptic number.

505747605 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

505747605 is a deficient number, since it is larger than the sum of its proper divisors (423478635).

505747605 is a wasteful number, since it uses less digits than its factorization.

505747605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161361.

The product of its (nonzero) digits is 147000, while the sum is 39.

The square root of 505747605 is about 22488.8328954617. The cubic root of 505747605 is about 796.7301979722.

The spelling of 505747605 in words is "five hundred five million, seven hundred forty-seven thousand, six hundred five".