697674647 has 2 divisors, whose sum is σ = 697674648. Its totient is φ = 697674646.

The previous prime is 697674631. The next prime is 697674727. The reversal of 697674647 is 746476796.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697674647 - 2⁴ = 697674631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 697674592 and 697674601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697674947) 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 as a sum of consecutive naturals, namely, 348837323 + 348837324.

It is an arithmetic number, because the mean of its divisors is an integer number (348837324).

Almost surely, 2^697674647 is an apocalyptic number.

697674647 is a deficient number, since it is larger than the sum of its proper divisors (1).

697674647 is an equidigital number, since it uses as much as digits as its factorization.

697674647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10668672, while the sum is 56.

The square root of 697674647 is about 26413.5315132225. The cubic root of 697674647 is about 886.9197252107.

The spelling of 697674647 in words is "six hundred ninety-seven million, six hundred seventy-four thousand, six hundred forty-seven".