705972791 has 2 divisors, whose sum is σ = 705972792. Its totient is φ = 705972790.

The previous prime is 705972763. The next prime is 705972847. The reversal of 705972791 is 197279507.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705972791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (705972391) 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, 352986395 + 352986396.

It is an arithmetic number, because the mean of its divisors is an integer number (352986396).

Almost surely, 2^705972791 is an apocalyptic number.

705972791 is a deficient number, since it is larger than the sum of its proper divisors (1).

705972791 is an equidigital number, since it uses as much as digits as its factorization.

705972791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 277830, while the sum is 47.

The square root of 705972791 is about 26570.1484941278. The cubic root of 705972791 is about 890.4222172919.

The spelling of 705972791 in words is "seven hundred five million, nine hundred seventy-two thousand, seven hundred ninety-one".