1020605587 has 2 divisors, whose sum is σ = 1020605588. Its totient is φ = 1020605586.

The previous prime is 1020605563. The next prime is 1020605603. The reversal of 1020605587 is 7855060201.

It is a strong prime.

It is an emirp because it is prime and its reverse (7855060201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020605587 - 2⁷ = 1020605459 is a prime.

It is a super-2 number, since 2×1020605587² = 2083271528431229138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1020605507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510302793 + 510302794.

It is an arithmetic number, because the mean of its divisors is an integer number (510302794).

Almost surely, 2^1020605587 is an apocalyptic number.

1020605587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020605587 is an equidigital number, since it uses as much as digits as its factorization.

1020605587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 1020605587 is about 31946.9182707816. The cubic root of 1020605587 is about 1006.8218850584.

Adding to 1020605587 its reverse (7855060201), we get a palindrome (8875665788).

The spelling of 1020605587 in words is "one billion, twenty million, six hundred five thousand, five hundred eighty-seven".