787163761 has 2 divisors, whose sum is σ = 787163762. Its totient is φ = 787163760.

The previous prime is 787163747. The next prime is 787163807. The reversal of 787163761 is 167361787.

It is an a-pointer prime, because the next prime (787163807) can be obtained adding 787163761 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 775901025 + 11262736 = 27855^2 + 3356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-787163761 is a prime.

It is not a weakly prime, because it can be changed into another prime (787163701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393581880 + 393581881.

It is an arithmetic number, because the mean of its divisors is an integer number (393581881).

Almost surely, 2^787163761 is an apocalyptic number.

It is an amenable number.

787163761 is a deficient number, since it is larger than the sum of its proper divisors (1).

787163761 is an equidigital number, since it uses as much as digits as its factorization.

787163761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 46.

The square root of 787163761 is about 28056.4388510017. The cubic root of 787163761 is about 923.3259269333.

The spelling of 787163761 in words is "seven hundred eighty-seven million, one hundred sixty-three thousand, seven hundred sixty-one".