689022845476 has 81 divisors (see below), whose sum is σ = 1414366070481. Its totient is φ = 292850107200.

The previous prime is 689022845473. The next prime is 689022845503. The reversal of 689022845476 is 674548220986.

The square root of 689022845476 is 830074.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 465634275876 + 223388569600 = 682374^2 + 472640^2 .

It is not an unprimeable number, because it can be changed into a prime (689022845473) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2452038456 + ... + 2452038736.

Almost surely, 2^689022845476 is an apocalyptic number.

689022845476 is the 830074-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689022845476

689022845476 is an abundant number, since it is smaller than the sum of its proper divisors (725343225005).

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

689022845476 is an equidigital number, since it uses as much as digits as its factorization.

689022845476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 61.

The spelling of 689022845476 in words is "six hundred eighty-nine billion, twenty-two million, eight hundred forty-five thousand, four hundred seventy-six".