697375561 has 4 divisors (see below), whose sum is σ = 707197824. Its totient is φ = 687553300.

The previous prime is 697375529. The next prime is 697375573. The reversal of 697375561 is 165573796.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 697375561 - 2⁵ = 697375529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (697375501) by changing a digit.

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, 4911025 + ... + 4911166.

It is an arithmetic number, because the mean of its divisors is an integer number (176799456).

Almost surely, 2^697375561 is an apocalyptic number.

It is an amenable number.

697375561 is a deficient number, since it is larger than the sum of its proper divisors (9822263).

697375561 is an equidigital number, since it uses as much as digits as its factorization.

697375561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9822262.

The product of its digits is 1190700, while the sum is 49.

The square root of 697375561 is about 26407.8693006460. The cubic root of 697375561 is about 886.7929692849.

The spelling of 697375561 in words is "six hundred ninety-seven million, three hundred seventy-five thousand, five hundred sixty-one".