961784687 has 2 divisors, whose sum is σ = 961784688. Its totient is φ = 961784686.

The previous prime is 961784671. The next prime is 961784729. The reversal of 961784687 is 786487169.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 961784687 - 2⁴ = 961784671 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961784627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480892343 + 480892344.

It is an arithmetic number, because the mean of its divisors is an integer number (480892344).

Almost surely, 2^961784687 is an apocalyptic number.

961784687 is a deficient number, since it is larger than the sum of its proper divisors (1).

961784687 is an equidigital number, since it uses as much as digits as its factorization.

961784687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 56.

The square root of 961784687 is about 31012.6536594339. The cubic root of 961784687 is about 987.0957591709.

The spelling of 961784687 in words is "nine hundred sixty-one million, seven hundred eighty-four thousand, six hundred eighty-seven".