505723346 has 4 divisors (see below), whose sum is σ = 758585022. Its totient is φ = 252861672.

The previous prime is 505723331. The next prime is 505723349. The reversal of 505723346 is 643327505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 643327505 = 5 ⋅128665501.

It can be written as a sum of positive squares in only one way, i.e., 424813321 + 80910025 = 20611^2 + 8995^2 .

It is a super-2 number, since 2×505723346² = 511512205378871432, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505723349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126430835 + ... + 126430838.

Almost surely, 2^505723346 is an apocalyptic number.

505723346 is a deficient number, since it is larger than the sum of its proper divisors (252861676).

505723346 is a wasteful number, since it uses less digits than its factorization.

505723346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252861675.

The product of its (nonzero) digits is 75600, while the sum is 35.

The square root of 505723346 is about 22488.2935324137. The cubic root of 505723346 is about 796.7174589520.

The spelling of 505723346 in words is "five hundred five million, seven hundred twenty-three thousand, three hundred forty-six".