505686793 has 2 divisors, whose sum is σ = 505686794. Its totient is φ = 505686792.

The previous prime is 505686781. The next prime is 505686803. The reversal of 505686793 is 397686505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 347002384 + 158684409 = 18628^2 + 12597^2 .

It is a cyclic number.

It is not a de Polignac number, because 505686793 - 2⁵ = 505686761 is a prime.

It is a super-2 number, since 2×505686793² = 511438265229249698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (505686893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252843396 + 252843397.

It is an arithmetic number, because the mean of its divisors is an integer number (252843397).

Almost surely, 2^505686793 is an apocalyptic number.

It is an amenable number.

505686793 is a deficient number, since it is larger than the sum of its proper divisors (1).

505686793 is an equidigital number, since it uses as much as digits as its factorization.

505686793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 505686793 is about 22487.4808059951. The cubic root of 505686793 is about 796.6982632691.

The spelling of 505686793 in words is "five hundred five million, six hundred eighty-six thousand, seven hundred ninety-three".