505009646 has 4 divisors (see below), whose sum is σ = 757514472. Its totient is φ = 252504822.

The previous prime is 505009613. The next prime is 505009649. The reversal of 505009646 is 646900505.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505009649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126252410 + ... + 126252413.

It is an arithmetic number, because the mean of its divisors is an integer number (189378618).

Almost surely, 2^505009646 is an apocalyptic number.

505009646 is a deficient number, since it is larger than the sum of its proper divisors (252504826).

505009646 is a wasteful number, since it uses less digits than its factorization.

505009646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252504825.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 505009646 is about 22472.4196739025. The cubic root of 505009646 is about 796.3424944244.

The spelling of 505009646 in words is "five hundred five million, nine thousand, six hundred forty-six".