697311337 has 2 divisors, whose sum is σ = 697311338. Its totient is φ = 697311336.

The previous prime is 697311319. The next prime is 697311347. The reversal of 697311337 is 733113796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 694269801 + 3041536 = 26349^2 + 1744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-697311337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 697311337.

It is not a weakly prime, because it can be changed into another prime (697311347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348655668 + 348655669.

It is an arithmetic number, because the mean of its divisors is an integer number (348655669).

Almost surely, 2^697311337 is an apocalyptic number.

It is an amenable number.

697311337 is a deficient number, since it is larger than the sum of its proper divisors (1).

697311337 is an equidigital number, since it uses as much as digits as its factorization.

697311337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71442, while the sum is 40.

The square root of 697311337 is about 26406.6532714769. The cubic root of 697311337 is about 886.7657457230.

The spelling of 697311337 in words is "six hundred ninety-seven million, three hundred eleven thousand, three hundred thirty-seven".