697672847 has 2 divisors, whose sum is σ = 697672848. Its totient is φ = 697672846.

The previous prime is 697672819. The next prime is 697672861. The reversal of 697672847 is 748276796.

697672847 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 a de Polignac number, because none of the positive numbers 2^k-697672847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 697672792 and 697672801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697672897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348836423 + 348836424.

It is an arithmetic number, because the mean of its divisors is an integer number (348836424).

Almost surely, 2^697672847 is an apocalyptic number.

697672847 is a deficient number, since it is larger than the sum of its proper divisors (1).

697672847 is an equidigital number, since it uses as much as digits as its factorization.

697672847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 56.

The square root of 697672847 is about 26413.4974397561. The cubic root of 697672847 is about 886.9189624593.

The spelling of 697672847 in words is "six hundred ninety-seven million, six hundred seventy-two thousand, eight hundred forty-seven".