697388438427 has 8 divisors (see below), whose sum is σ = 929883761664. Its totient is φ = 464909370408.

The previous prime is 697388438371. The next prime is 697388438431. The reversal of 697388438427 is 724834883796.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 697388438427 - 2²⁰ = 697387389851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (697388438437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3963343 + ... + 4135560.

It is an arithmetic number, because the mean of its divisors is an integer number (116235470208).

Almost surely, 2^697388438427 is an apocalyptic number.

697388438427 is a deficient number, since it is larger than the sum of its proper divisors (232495323237).

697388438427 is a wasteful number, since it uses less digits than its factorization.

697388438427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8127609.

The product of its digits is 390168576, while the sum is 69.

The spelling of 697388438427 in words is "six hundred ninety-seven billion, three hundred eighty-eight million, four hundred thirty-eight thousand, four hundred twenty-seven".