697538328064 has 40 divisors (see below), whose sum is σ = 1395245082528. Its totient is φ = 348386088960.

The previous prime is 697538328049. The next prime is 697538328083. The reversal of 697538328064 is 460823835796.

It is a junction number, because it is equal to n+sod(n) for n = 697538327993 and 697538328011.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 281307 + ... + 1214170.

Almost surely, 2^697538328064 is an apocalyptic number.

697538328064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

697538328064 is an abundant number, since it is smaller than the sum of its proper divisors (697706754464).

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

697538328064 is an equidigital number, since it uses as much as digits as its factorization.

697538328064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496406 (or 1496390 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 61.

The spelling of 697538328064 in words is "six hundred ninety-seven billion, five hundred thirty-eight million, three hundred twenty-eight thousand, sixty-four".