505464647 has 2 divisors, whose sum is σ = 505464648. Its totient is φ = 505464646.

The previous prime is 505464643. The next prime is 505464667. The reversal of 505464647 is 746464505.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505464647 - 2² = 505464643 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505464643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252732323 + 252732324.

It is an arithmetic number, because the mean of its divisors is an integer number (252732324).

Almost surely, 2^505464647 is an apocalyptic number.

505464647 is a deficient number, since it is larger than the sum of its proper divisors (1).

505464647 is an equidigital number, since it uses as much as digits as its factorization.

505464647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 41.

The square root of 505464647 is about 22482.5409373585. The cubic root of 505464647 is about 796.5815841592.

The spelling of 505464647 in words is "five hundred five million, four hundred sixty-four thousand, six hundred forty-seven".