697375345 has 4 divisors (see below), whose sum is σ = 836850420. Its totient is φ = 557900272.

The previous prime is 697375313. The next prime is 697375369. The reversal of 697375345 is 543573796.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 500506384 + 196868961 = 22372^2 + 14031^2 .

It is a cyclic number.

It is not a de Polignac number, because 697375345 - 2⁵ = 697375313 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69737530 + ... + 69737539.

It is an arithmetic number, because the mean of its divisors is an integer number (209212605).

Almost surely, 2^697375345 is an apocalyptic number.

It is an amenable number.

697375345 is a deficient number, since it is larger than the sum of its proper divisors (139475075).

697375345 is a wasteful number, since it uses less digits than its factorization.

697375345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139475074.

The product of its digits is 2381400, while the sum is 49.

The square root of 697375345 is about 26407.8652109556. The cubic root of 697375345 is about 886.7928777286.

It can be divided in two parts, 69 and 7375345, that multiplied together give a palindrome (508898805).

The spelling of 697375345 in words is "six hundred ninety-seven million, three hundred seventy-five thousand, three hundred forty-five".