691994363404 has 12 divisors (see below), whose sum is σ = 1211041465200. Its totient is φ = 345982516208.

The previous prime is 691994363399. The next prime is 691994363509. The reversal of 691994363404 is 404363499196.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3559864 + ... + 3749215.

It is an arithmetic number, because the mean of its divisors is an integer number (100920122100).

Almost surely, 2^691994363404 is an apocalyptic number.

It is an amenable number.

691994363404 is a deficient number, since it is larger than the sum of its proper divisors (519047101796).

691994363404 is a wasteful number, since it uses less digits than its factorization.

691994363404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7332752 (or 7332750 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 58.

The spelling of 691994363404 in words is "six hundred ninety-one billion, nine hundred ninety-four million, three hundred sixty-three thousand, four hundred four".