78496783 has 2 divisors, whose sum is σ = 78496784. Its totient is φ = 78496782.

The previous prime is 78496777. The next prime is 78496787. The reversal of 78496783 is 38769487.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78496783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78496783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78496787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39248391 + 39248392.

It is an arithmetic number, because the mean of its divisors is an integer number (39248392).

Almost surely, 2^78496783 is an apocalyptic number.

78496783 is a deficient number, since it is larger than the sum of its proper divisors (1).

78496783 is an equidigital number, since it uses as much as digits as its factorization.

78496783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 52.

The square root of 78496783 is about 8859.8410256618. The cubic root of 78496783 is about 428.1710364689.

The spelling of 78496783 in words is "seventy-eight million, four hundred ninety-six thousand, seven hundred eighty-three".