694478424897 has 24 divisors (see below), whose sum is σ = 1046909845800. Its totient is φ = 443064642048.

The previous prime is 694478424889. The next prime is 694478424911. The reversal of 694478424897 is 798424874496.

694478424897 is a `hidden beast` number, since 6 + 9 + 44 + 78 + 424 + 8 + 97 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 62869041 + 694415555856 = 7929^2 + 833316^2 .

It is not a de Polignac number, because 694478424897 - 2³ = 694478424889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (694478424877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11744122 + ... + 11803107.

It is an arithmetic number, because the mean of its divisors is an integer number (43621243575).

Almost surely, 2^694478424897 is an apocalyptic number.

It is an amenable number.

694478424897 is a deficient number, since it is larger than the sum of its proper divisors (352431420903).

694478424897 is a wasteful number, since it uses less digits than its factorization.

694478424897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23547377 (or 23547374 counting only the distinct ones).

The product of its digits is 780337152, while the sum is 72.

The spelling of 694478424897 in words is "six hundred ninety-four billion, four hundred seventy-eight million, four hundred twenty-four thousand, eight hundred ninety-seven".