696144557 has 4 divisors (see below), whose sum is σ = 696202560. Its totient is φ = 696086556.

The previous prime is 696144551. The next prime is 696144569. The reversal of 696144557 is 755441696.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 696144557 - 2⁸ = 696144301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696144551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3557 + ... + 37482.

It is an arithmetic number, because the mean of its divisors is an integer number (174050640).

Almost surely, 2^696144557 is an apocalyptic number.

It is an amenable number.

696144557 is a deficient number, since it is larger than the sum of its proper divisors (58003).

696144557 is a wasteful number, since it uses less digits than its factorization.

696144557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58002.

The product of its digits is 907200, while the sum is 47.

The square root of 696144557 is about 26384.5514837755. The cubic root of 696144557 is about 886.2708743972.

The spelling of 696144557 in words is "six hundred ninety-six million, one hundred forty-four thousand, five hundred fifty-seven".