697684797 has 6 divisors (see below), whose sum is σ = 1007766942. Its totient is φ = 465123192.

The previous prime is 697684789. The next prime is 697684843. The reversal of 697684797 is 797486796.

It can be written as a sum of positive squares in only one way, i.e., 480004281 + 217680516 = 21909^2 + 14754^2 .

It is not a de Polignac number, because 697684797 - 2³ = 697684789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697684297) 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 5 ways as a sum of consecutive naturals, for example, 38760258 + ... + 38760275.

It is an arithmetic number, because the mean of its divisors is an integer number (167961157).

Almost surely, 2^697684797 is an apocalyptic number.

It is an amenable number.

697684797 is a deficient number, since it is larger than the sum of its proper divisors (310082145).

697684797 is a wasteful number, since it uses less digits than its factorization.

697684797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77520539 (or 77520536 counting only the distinct ones).

The product of its digits is 32006016, while the sum is 63.

The square root of 697684797 is about 26413.7236488913. The cubic root of 697684797 is about 886.9240262564.

The spelling of 697684797 in words is "six hundred ninety-seven million, six hundred eighty-four thousand, seven hundred ninety-seven".