505649719 has 2 divisors, whose sum is σ = 505649720. Its totient is φ = 505649718.

The previous prime is 505649693. The next prime is 505649723. The reversal of 505649719 is 917946505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505649719 - 2⁷ = 505649591 is a prime.

It is a super-2 number, since 2×505649719² = 511363276649557922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505649759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252824859 + 252824860.

It is an arithmetic number, because the mean of its divisors is an integer number (252824860).

Almost surely, 2^505649719 is an apocalyptic number.

505649719 is a deficient number, since it is larger than the sum of its proper divisors (1).

505649719 is an equidigital number, since it uses as much as digits as its factorization.

505649719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 505649719 is about 22486.6564655575. The cubic root of 505649719 is about 796.6787930399.

The spelling of 505649719 in words is "five hundred five million, six hundred forty-nine thousand, seven hundred nineteen".