1020500647 has 2 divisors, whose sum is σ = 1020500648. Its totient is φ = 1020500646.

The previous prime is 1020500641. The next prime is 1020500669. The reversal of 1020500647 is 7460050201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020500647 - 2¹¹ = 1020498599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020500641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510250323 + 510250324.

It is an arithmetic number, because the mean of its divisors is an integer number (510250324).

Almost surely, 2^1020500647 is an apocalyptic number.

1020500647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020500647 is an equidigital number, since it uses as much as digits as its factorization.

1020500647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1020500647 is about 31945.2758166211. The cubic root of 1020500647 is about 1006.7873762950.

Adding to 1020500647 its reverse (7460050201), we get a palindrome (8480550848).

The spelling of 1020500647 in words is "one billion, twenty million, five hundred thousand, six hundred forty-seven".