697407647 has 2 divisors, whose sum is σ = 697407648. Its totient is φ = 697407646.

The previous prime is 697407547. The next prime is 697407701. The reversal of 697407647 is 746704796.

697407647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 697407647 - 2⁸ = 697407391 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 697407595 and 697407604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697407247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348703823 + 348703824.

It is an arithmetic number, because the mean of its divisors is an integer number (348703824).

Almost surely, 2^697407647 is an apocalyptic number.

697407647 is a deficient number, since it is larger than the sum of its proper divisors (1).

697407647 is an equidigital number, since it uses as much as digits as its factorization.

697407647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 50.

The square root of 697407647 is about 26408.4768019664. The cubic root of 697407647 is about 886.8065694187.

The spelling of 697407647 in words is "six hundred ninety-seven million, four hundred seven thousand, six hundred forty-seven".