693731921690 has 32 divisors (see below), whose sum is σ = 1254351087360. Its totient is φ = 276242529600.

The previous prime is 693731921681. The next prime is 693731921791. The reversal of 693731921690 is 96129137396.

It is a super-2 number, since 2×693731921690² (a number of 24 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 3226445 + ... + 3434735.

It is an arithmetic number, because the mean of its divisors is an integer number (39198471480).

Almost surely, 2^693731921690 is an apocalyptic number.

693731921690 is a deficient number, since it is larger than the sum of its proper divisors (560619165670).

693731921690 is a wasteful number, since it uses less digits than its factorization.

693731921690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209798.

The product of its (nonzero) digits is 3306744, while the sum is 56.

The spelling of 693731921690 in words is "six hundred ninety-three billion, seven hundred thirty-one million, nine hundred twenty-one thousand, six hundred ninety".