689420574072 has 192 divisors, whose sum is σ = 2059059955680. Its totient is φ = 215358124032.

The previous prime is 689420574061. The next prime is 689420574077. The reversal of 689420574072 is 270475024986.

689420574072 is a `hidden beast` number, since 6 + 89 + 420 + 5 + 74 + 0 + 72 = 666.

It is a super-2 number, since 2×689420574072² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689420574077) 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 47 ways as a sum of consecutive naturals, for example, 7655418 + ... + 7744950.

Almost surely, 2^689420574072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689420574072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1029529977840).

689420574072 is an abundant number, since it is smaller than the sum of its proper divisors (1369639381608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689420574072 is a wasteful number, since it uses less digits than its factorization.

689420574072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89804 (or 89788 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 689420574072 in words is "six hundred eighty-nine billion, four hundred twenty million, five hundred seventy-four thousand, seventy-two".