697407947 has 2 divisors, whose sum is σ = 697407948. Its totient is φ = 697407946.

The previous prime is 697407923. The next prime is 697407967. The reversal of 697407947 is 749704796.

697407947 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 697407947 - 2²⁰ = 696359371 is a prime.

It is not a weakly prime, because it can be changed into another prime (697407967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348703973 + 348703974.

It is an arithmetic number, because the mean of its divisors is an integer number (348703974).

Almost surely, 2^697407947 is an apocalyptic number.

697407947 is a deficient number, since it is larger than the sum of its proper divisors (1).

697407947 is an equidigital number, since it uses as much as digits as its factorization.

697407947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2667168, while the sum is 53.

The square root of 697407947 is about 26408.4824819602. The cubic root of 697407947 is about 886.8066965762.

The spelling of 697407947 in words is "six hundred ninety-seven million, four hundred seven thousand, nine hundred forty-seven".