689746554 has 24 divisors (see below), whose sum is σ = 1707944160. Its totient is φ = 197070408.

The previous prime is 689746553. The next prime is 689746583. The reversal of 689746554 is 455647986.

689746554 is a `hidden beast` number, since 6 + 89 + 7 + 4 + 6 + 554 = 666.

689746554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×689746554³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 689746554.

It is not an unprimeable number, because it can be changed into a prime (689746553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2736964 + ... + 2737215.

It is an arithmetic number, because the mean of its divisors is an integer number (71164340).

Almost surely, 2^689746554 is an apocalyptic number.

689746554 is an abundant number, since it is smaller than the sum of its proper divisors (1018197606).

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

689746554 is a wasteful number, since it uses less digits than its factorization.

689746554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474194 (or 5474191 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The square root of 689746554 is about 26263.0263678808. The cubic root of 689746554 is about 883.5473862491.

The spelling of 689746554 in words is "six hundred eighty-nine million, seven hundred forty-six thousand, five hundred fifty-four".