693803778 has 16 divisors (see below), whose sum is σ = 1388525376. Its totient is φ = 231114960.

The previous prime is 693803771. The next prime is 693803797. The reversal of 693803778 is 877308396.

It is a self number, because there is not a number n which added to its sum of digits gives 693803778.

It is not an unprimeable number, because it can be changed into a prime (693803771) 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 in 7 ways as a sum of consecutive naturals, for example, 28213 + ... + 46728.

It is an arithmetic number, because the mean of its divisors is an integer number (86782836).

Almost surely, 2^693803778 is an apocalyptic number.

693803778 is an abundant number, since it is smaller than the sum of its proper divisors (694721598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

693803778 is a wasteful number, since it uses less digits than its factorization.

693803778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76489.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 693803778 is about 26340.1552387225. The cubic root of 693803778 is about 885.2763999893.

The spelling of 693803778 in words is "six hundred ninety-three million, eight hundred three thousand, seven hundred seventy-eight".