705808451 has 2 divisors, whose sum is σ = 705808452. Its totient is φ = 705808450.

The previous prime is 705808391. The next prime is 705808471. The reversal of 705808451 is 154808507.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705808451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (705808471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352904225 + 352904226.

It is an arithmetic number, because the mean of its divisors is an integer number (352904226).

Almost surely, 2^705808451 is an apocalyptic number.

705808451 is a deficient number, since it is larger than the sum of its proper divisors (1).

705808451 is an equidigital number, since it uses as much as digits as its factorization.

705808451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 705808451 is about 26567.0557457916. The cubic root of 705808451 is about 890.3531195659.

The spelling of 705808451 in words is "seven hundred five million, eight hundred eight thousand, four hundred fifty-one".