505554646 has 4 divisors (see below), whose sum is σ = 758331972. Its totient is φ = 252777322.

The previous prime is 505554631. The next prime is 505554649. The reversal of 505554646 is 646455505.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 505554599 and 505554608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505554649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126388660 + ... + 126388663.

It is an arithmetic number, because the mean of its divisors is an integer number (189582993).

Almost surely, 2^505554646 is an apocalyptic number.

505554646 is a deficient number, since it is larger than the sum of its proper divisors (252777326).

505554646 is a wasteful number, since it uses less digits than its factorization.

505554646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252777325.

The product of its (nonzero) digits is 360000, while the sum is 40.

The square root of 505554646 is about 22484.5423791546. The cubic root of 505554646 is about 796.6288590061.

The spelling of 505554646 in words is "five hundred five million, five hundred fifty-four thousand, six hundred forty-six".