697894679 has 2 divisors, whose sum is σ = 697894680. Its totient is φ = 697894678.

The previous prime is 697894663. The next prime is 697894711. The reversal of 697894679 is 976498796.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697894679 - 2⁴ = 697894663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697896679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348947339 + 348947340.

It is an arithmetic number, because the mean of its divisors is an integer number (348947340).

Almost surely, 2^697894679 is an apocalyptic number.

697894679 is a deficient number, since it is larger than the sum of its proper divisors (1).

697894679 is an equidigital number, since it uses as much as digits as its factorization.

697894679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41150592, while the sum is 65.

The square root of 697894679 is about 26417.6963227303. The cubic root of 697894679 is about 887.0129540579.

The spelling of 697894679 in words is "six hundred ninety-seven million, eight hundred ninety-four thousand, six hundred seventy-nine".