693919913 has 8 divisors (see below), whose sum is σ = 725780736. Its totient is φ = 662200000.

The previous prime is 693919909. The next prime is 693919927. The reversal of 693919913 is 319919396.

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

It is a cyclic number.

It is not a de Polignac number, because 693919913 - 2² = 693919909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (693919943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25088 + ... + 44913.

It is an arithmetic number, because the mean of its divisors is an integer number (90722592).

Almost surely, 2^693919913 is an apocalyptic number.

It is an amenable number.

693919913 is a deficient number, since it is larger than the sum of its proper divisors (31860823).

693919913 is a wasteful number, since it uses less digits than its factorization.

693919913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70455.

The product of its digits is 354294, while the sum is 50.

The square root of 693919913 is about 26342.3596703105. The cubic root of 693919913 is about 885.3257923594.

The spelling of 693919913 in words is "six hundred ninety-three million, nine hundred nineteen thousand, nine hundred thirteen".