693398487 has 4 divisors (see below), whose sum is σ = 924531320. Its totient is φ = 462265656.

The previous prime is 693398467. The next prime is 693398543. The reversal of 693398487 is 784893396.

It is a happy number.

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

It is not a de Polignac number, because 693398487 - 2¹¹ = 693396439 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 (693398467) 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, 115566412 + ... + 115566417.

It is an arithmetic number, because the mean of its divisors is an integer number (231132830).

Almost surely, 2^693398487 is an apocalyptic number.

693398487 is a deficient number, since it is larger than the sum of its proper divisors (231132833).

693398487 is a wasteful number, since it uses less digits than its factorization.

693398487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231132832.

The product of its digits is 7838208, while the sum is 57.

The square root of 693398487 is about 26332.4607091703. The cubic root of 693398487 is about 885.1039859939.

The spelling of 693398487 in words is "six hundred ninety-three million, three hundred ninety-eight thousand, four hundred eighty-seven".