787478273 has 2 divisors, whose sum is σ = 787478274. Its totient is φ = 787478272.

The previous prime is 787478249. The next prime is 787478281. The reversal of 787478273 is 372874787.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 787195249 + 283024 = 28057^2 + 532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-787478273 is a prime.

It is not a weakly prime, because it can be changed into another prime (787478203) 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, 393739136 + 393739137.

It is an arithmetic number, because the mean of its divisors is an integer number (393739137).

Almost surely, 2^787478273 is an apocalyptic number.

It is an amenable number.

787478273 is a deficient number, since it is larger than the sum of its proper divisors (1).

787478273 is an equidigital number, since it uses as much as digits as its factorization.

787478273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3687936, while the sum is 53.

The square root of 787478273 is about 28062.0432791342. The cubic root of 787478273 is about 923.4488824650.

The spelling of 787478273 in words is "seven hundred eighty-seven million, four hundred seventy-eight thousand, two hundred seventy-three".