86782679 has 2 divisors, whose sum is σ = 86782680. Its totient is φ = 86782678.

The previous prime is 86782651. The next prime is 86782711. The reversal of 86782679 is 97628768.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86782679 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86782679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86782379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43391339 + 43391340.

It is an arithmetic number, because the mean of its divisors is an integer number (43391340).

Almost surely, 2^86782679 is an apocalyptic number.

86782679 is a deficient number, since it is larger than the sum of its proper divisors (1).

86782679 is an equidigital number, since it uses as much as digits as its factorization.

86782679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 53.

The square root of 86782679 is about 9315.7221405536. The cubic root of 86782679 is about 442.7355044603.

The spelling of 86782679 in words is "eighty-six million, seven hundred eighty-two thousand, six hundred seventy-nine".