706780778 has 16 divisors (see below), whose sum is σ = 1159142400. Its totient is φ = 320544000.

The previous prime is 706780769. The next prime is 706780787. The reversal of 706780778 is 877087607.

It is an interprime number because it is at equal distance from previous prime (706780769) and next prime (706780787).

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 25898 + ... + 45653.

It is an arithmetic number, because the mean of its divisors is an integer number (72446400).

Almost surely, 2^706780778 is an apocalyptic number.

706780778 is a deficient number, since it is larger than the sum of its proper divisors (452361622).

706780778 is a wasteful number, since it uses less digits than its factorization.

706780778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72013.

The product of its (nonzero) digits is 921984, while the sum is 50.

The square root of 706780778 is about 26585.3489350808. The cubic root of 706780778 is about 890.7617843353.

The spelling of 706780778 in words is "seven hundred six million, seven hundred eighty thousand, seven hundred seventy-eight".