689697700456 has 32 divisors (see below), whose sum is σ = 1369626770880. Its totient is φ = 324474976000.

The previous prime is 689697700357. The next prime is 689697700459. The reversal of 689697700456 is 654007796986.

It is a junction number, because it is equal to n+sod(n) for n = 689697700391 and 689697700400.

It is not an unprimeable number, because it can be changed into a prime (689697700459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191470 + ... + 1189981.

It is an arithmetic number, because the mean of its divisors is an integer number (42800836590).

Almost surely, 2^689697700456 is an apocalyptic number.

It is an amenable number.

689697700456 is a deficient number, since it is larger than the sum of its proper divisors (679929070424).

689697700456 is a wasteful number, since it uses less digits than its factorization.

689697700456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385145 (or 1385141 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 67.

The spelling of 689697700456 in words is "six hundred eighty-nine billion, six hundred ninety-seven million, seven hundred thousand, four hundred fifty-six".