693481393 has 4 divisors (see below), whose sum is σ = 756525168. Its totient is φ = 630437620.

The previous prime is 693481331. The next prime is 693481427. The reversal of 693481393 is 393184396.

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 a de Polignac number, because none of the positive numbers 2^k-693481393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (693181393) 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, 31521871 + ... + 31521892.

It is an arithmetic number, because the mean of its divisors is an integer number (189131292).

Almost surely, 2^693481393 is an apocalyptic number.

It is an amenable number.

693481393 is a deficient number, since it is larger than the sum of its proper divisors (63043775).

693481393 is a wasteful number, since it uses less digits than its factorization.

693481393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63043774.

The product of its digits is 419904, while the sum is 46.

The square root of 693481393 is about 26334.0348788407. The cubic root of 693481393 is about 885.1392603265.

The spelling of 693481393 in words is "six hundred ninety-three million, four hundred eighty-one thousand, three hundred ninety-three".