697228373 has 2 divisors, whose sum is σ = 697228374. Its totient is φ = 697228372.

The previous prime is 697228319. The next prime is 697228387. The reversal of 697228373 is 373822796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 542051524 + 155176849 = 23282^2 + 12457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-697228373 is a prime.

It is a super-2 number, since 2×697228373² = 972254808232454258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697228573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348614186 + 348614187.

It is an arithmetic number, because the mean of its divisors is an integer number (348614187).

Almost surely, 2^697228373 is an apocalyptic number.

It is an amenable number.

697228373 is a deficient number, since it is larger than the sum of its proper divisors (1).

697228373 is an equidigital number, since it uses as much as digits as its factorization.

697228373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 47.

The square root of 697228373 is about 26405.0823327631. The cubic root of 697228373 is about 886.7305760901.

The spelling of 697228373 in words is "six hundred ninety-seven million, two hundred twenty-eight thousand, three hundred seventy-three".