86780783 has 2 divisors, whose sum is σ = 86780784. Its totient is φ = 86780782.

The previous prime is 86780777. The next prime is 86780791. The reversal of 86780783 is 38708768.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86780783 - 2⁶ = 86780719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86780773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43390391 + 43390392.

It is an arithmetic number, because the mean of its divisors is an integer number (43390392).

Almost surely, 2^86780783 is an apocalyptic number.

86780783 is a deficient number, since it is larger than the sum of its proper divisors (1).

86780783 is an equidigital number, since it uses as much as digits as its factorization.

86780783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 86780783 is about 9315.6203765503. The cubic root of 86780783 is about 442.7322801892.

The spelling of 86780783 in words is "eighty-six million, seven hundred eighty thousand, seven hundred eighty-three".