787732861 has 2 divisors, whose sum is σ = 787732862. Its totient is φ = 787732860.

The previous prime is 787732843. The next prime is 787732879. The reversal of 787732861 is 168237787.

It is a balanced prime because it is at equal distance from previous prime (787732843) and next prime (787732879).

It can be written as a sum of positive squares in only one way, i.e., 403768836 + 383964025 = 20094^2 + 19595^2 .

It is a cyclic number.

It is not a de Polignac number, because 787732861 - 2¹¹ = 787730813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (787732811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393866430 + 393866431.

It is an arithmetic number, because the mean of its divisors is an integer number (393866431).

Almost surely, 2^787732861 is an apocalyptic number.

It is an amenable number.

787732861 is a deficient number, since it is larger than the sum of its proper divisors (1).

787732861 is an equidigital number, since it uses as much as digits as its factorization.

787732861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 49.

The square root of 787732861 is about 28066.5790754769. The cubic root of 787732861 is about 923.5483872942.

The spelling of 787732861 in words is "seven hundred eighty-seven million, seven hundred thirty-two thousand, eight hundred sixty-one".