1071681587 has 2 divisors, whose sum is σ = 1071681588. Its totient is φ = 1071681586.

The previous prime is 1071681577. The next prime is 1071681599. The reversal of 1071681587 is 7851861701.

1071681587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1071681587 - 2²⁴ = 1054904371 is a prime.

It is a super-2 number, since 2×1071681587² = 2297002847829677138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1071681517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535840793 + 535840794.

It is an arithmetic number, because the mean of its divisors is an integer number (535840794).

Almost surely, 2^1071681587 is an apocalyptic number.

1071681587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071681587 is an equidigital number, since it uses as much as digits as its factorization.

1071681587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 44.

The square root of 1071681587 is about 32736.5481839488. The cubic root of 1071681587 is about 1023.3446489663.

The spelling of 1071681587 in words is "one billion, seventy-one million, six hundred eighty-one thousand, five hundred eighty-seven".