697538455 has 4 divisors (see below), whose sum is σ = 837046152. Its totient is φ = 558030760.

The previous prime is 697538447. The next prime is 697538521. The reversal of 697538455 is 554835796.

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

It is not a de Polignac number, because 697538455 - 2³ = 697538447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 69753841 + ... + 69753850.

It is an arithmetic number, because the mean of its divisors is an integer number (209261538).

Almost surely, 2^697538455 is an apocalyptic number.

697538455 is a deficient number, since it is larger than the sum of its proper divisors (139507697).

697538455 is a wasteful number, since it uses less digits than its factorization.

697538455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139507696.

The product of its digits is 4536000, while the sum is 52.

The square root of 697538455 is about 26410.9533148654. The cubic root of 697538455 is about 886.8620100410.

The spelling of 697538455 in words is "six hundred ninety-seven million, five hundred thirty-eight thousand, four hundred fifty-five".